C:\xampp\htdocs\landing\wp-content\plugins\updraftplus\backup.php


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<?php

if (!defined('UPDRAFTPLUS_DIR')) die('No direct access allowed');
if (!
class_exists('UpdraftPlus_PclZip')) require_once(UPDRAFTPLUS_DIR.'/includes/class-zip.php');

/**
 * This file contains code that is only needed/loaded when a backup is running
 */
class UpdraftPlus_Backup {

    private 
$index 0;

    private 
$manifest_path;

    private 
$zipfiles_added;

    private 
$zipfiles_added_thisrun 0;

    public 
$zipfiles_dirbatched;

    public 
$zipfiles_batched;

    public 
$zipfiles_skipped_notaltered;

    private 
$zip_split_every 419430400// 400MB

    
private $zip_last_ratio 1;

    private 
$whichone;

    private 
$zip_basename '';

    private 
$backup_basename '';

    private 
$zipfiles_lastwritetime;

    
// 0 = unknown; false = failed
    
public $binzip 0;

    private 
$dbhandle;

    private 
$dbhandle_isgz;

    
// Array of entities => times
    
private $altered_since = -1;

    
// Time for the current entity
    
private $makezip_if_altered_since = -1;

    private 
$excluded_extensions false;

    private 
$use_zip_object 'UpdraftPlus_ZipArchive';

    public 
$debug false;

    public 
$updraft_dir;

    private 
$site_name;

    private 
$wpdb_obj;

    private 
$job_file_entities = array();

    private 
$first_run 0;

    
// Record of zip files created
    
private $backup_files_array = array();

    
// Used when deciding to use the 'store' or 'deflate' zip storage method
    
private $extensions_to_not_compress = array();

    
// Append to this any skipped tables
    
private $skipped_tables;
    
    
// When initialised, a boolean
    
public $last_storage_instance;
    
    
// The absolute upper limit that will be considered for a zip batch (in bytes)
    
private $zip_batch_ceiling;

    private 
$backup_excluded_patterns = array();
    
    
// Bytes of uncompressed data written since last open
    
private $db_current_raw_bytes 0;
    
    private 
$table_prefix;

    private 
$table_prefix_raw;
    
    
/**
     * Class constructor
     *
     * @param Array|String $backup_files  - files to backup, or (string)'no'
     * @param Integer       $altered_since - only backup files altered since this time (UNIX epoch time)
     */
    
public function __construct($backup_files$altered_since = -1) {

        global 
$updraftplus;

        
$this->site_name $this->get_site_name();

        
// Decide which zip engine to begin with
        
$this->debug UpdraftPlus_Options::get_updraft_option('updraft_debug_mode');
        
$this->updraft_dir $updraftplus->backups_dir_location();
        
$this->updraft_dir_realpath realpath($this->updraft_dir);

        require_once(
UPDRAFTPLUS_DIR.'/includes/class-database-utility.php');

        if (
'no' === $backup_files) {
            
$this->use_zip_object 'UpdraftPlus_PclZip';
            return;
        }

        
$this->extensions_to_not_compress array_unique(array_map('strtolower'array_map('trim'explode(','UPDRAFTPLUS_ZIP_NOCOMPRESS))));

        
$this->backup_excluded_patterns = array(
            array(
                
// all in one wp migration pattern: WP_PLUGIN_DIR/all-in-one-wp-migration/storage/*/*.wpress, `ai1wm-backups` folder in wp-content is already implicitly handled on the UDP settings with a `*backups` predefined exclusion rule for `others` directory
                
'directory' => realpath(WP_PLUGIN_DIR).DIRECTORY_SEPARATOR.'all-in-one-wp-migration'.DIRECTORY_SEPARATOR.'storage',
                
'regex' => '/.+\.wpress$/is',
            ),
        );

        
$this->altered_since $altered_since;

        
$resumptions_since_last_successful $updraftplus->current_resumption $updraftplus->last_successful_resumption;
        
        
// false means 'tried + failed'; whereas 0 means 'not yet tried'
        // Disallow binzip on OpenVZ when we're not sure there's plenty of memory
        
if (=== $this->binzip && (!defined('UPDRAFTPLUS_PREFERPCLZIP') || !UPDRAFTPLUS_PREFERPCLZIP) && (!defined('UPDRAFTPLUS_NO_BINZIP') || !UPDRAFTPLUS_NO_BINZIP) && ($updraftplus->current_resumption || $resumptions_since_last_successful 2)) {

            if (@
file_exists('/proc/user_beancounters') && @file_exists('/proc/meminfo') && @is_readable('/proc/meminfo')) {// phpcs:ignore Generic.PHP.NoSilencedErrors.Discouraged
                
$meminfo = @file_get_contents('/proc/meminfo'falsenull0200);// phpcs:ignore Generic.PHP.NoSilencedErrors.Discouraged
                
if (is_string($meminfo) && preg_match('/MemTotal:\s+(\d+) kB/'$meminfo$matches)) {
                    
$memory_mb $matches[1]/1024;
                    
// If the report is of a large amount, then we're probably getting the total memory on the hypervisor (this has been observed), and don't really know the VPS's memory
                    
$vz_log "OpenVZ; reported memory: ".round($memory_mb1)." MB";
                    if (
$memory_mb 1024 || $memory_mb 8192) {
                        
$openvz_lowmem true;
                        
$vz_log .= " (will not use BinZip)";
                    }
                    
$updraftplus->log($vz_log);
                }
            }
            if (empty(
$openvz_lowmem)) {
                
$updraftplus->log('Checking if we have a zip executable available');
                
$binzip $updraftplus->find_working_bin_zip();
                if (
is_string($binzip)) {
                    
$updraftplus->log("Zip engine: found/will use a binary zip: $binzip");
                    
$this->binzip $binzip;
                    
$this->use_zip_object 'UpdraftPlus_BinZip';
                }
            }
        }

        
// In tests, PclZip was found to be 25% slower than ZipArchive
        
if ('UpdraftPlus_PclZip' != $this->use_zip_object && empty($this->binzip) && ((defined('UPDRAFTPLUS_PREFERPCLZIP') && UPDRAFTPLUS_PREFERPCLZIP == true) || !class_exists('ZipArchive') || !class_exists('UpdraftPlus_ZipArchive') || (!extension_loaded('zip') && !method_exists('ZipArchive''AddFile')))) {
            global 
$updraftplus;
            
$updraftplus->log("Zip engine: ZipArchive (a.k.a. php-zip) is not available or is disabled (will use PclZip (much slower) if needed)");
            
$this->use_zip_object 'UpdraftPlus_PclZip';
        }
        
        
$this->zip_batch_ceiling = (defined('UPDRAFTPLUS_ZIP_BATCH_CEILING') && UPDRAFTPLUS_ZIP_BATCH_CEILING 104857600) ? UPDRAFTPLUS_ZIP_BATCH_CEILING 200 1048576;

        
add_filter('updraftplus_exclude_file', array($this'backup_exclude_file'), 102);

    }

    
/**
     * Get a site name suitable for use in the backup filename
     *
     * @return String
     */
    
private function get_site_name() {
        
// Get the blog name and rip out known-problematic characters. Remember that we may need to be able to upload this to any FTP server or cloud storage, where filename support may be unknown
        
$site_name str_replace('__''_'preg_replace('/[^A-Za-z0-9_]/'''str_replace(' ''_'substr(get_bloginfo(), 032))));
        if (!
$site_name || preg_match('#^_+$#'$site_name)) {
            
// Try again...
            
$parsed_url parse_url(home_url(), PHP_URL_HOST);
            
$parsed_subdir untrailingslashit(parse_url(home_url(), PHP_URL_PATH));
            if (
$parsed_subdir && '/' != $parsed_subdir$parsed_url .= str_replace(array('/''\\'), '_'$parsed_subdir);
            
$site_name str_replace('__''_'preg_replace('/[^A-Za-z0-9_]/'''str_replace(' ''_'substr($parsed_url032))));
            if (!
$site_name || preg_match('#^_+$#'$site_name)) $site_name 'WordPress_Backup';
        }

        
// Allow an over-ride. Careful about introducing characters not supported by your filesystem or cloud storage.
        
return apply_filters('updraftplus_blog_name'$site_name);
    }

    
/**
     * Public, because called from the 'More Files' add-on
     *
     * @param String|Array      $create_from_dir      Directory/ies to create the zip
     * @param String          $whichone             Entity being backed up (e.g. 'plugins', 'uploads')
     * @param String          $backup_file_basename Name of backup file
     * @param Integer          $index                Index of zip in the sequence
     * @param Integer|Boolean $first_linked_index   First linked index in the sequence, or false
     *
     * @return Boolean
     */
    
public function create_zip($create_from_dir$whichone$backup_file_basename$index$first_linked_index false) {
        
// Note: $create_from_dir can be an array or a string
        
        
set_time_limit(UPDRAFTPLUS_SET_TIME_LIMIT);
        
        
$original_index $index;

        
$this->index $index;
        
$this->first_linked_index = (false === $first_linked_index) ? $first_linked_index;
        
$this->whichone $whichone;

        global 
$updraftplus;

        
$this->zip_split_every max((int) $updraftplus->jobdata_get('split_every'), UPDRAFTPLUS_SPLIT_MIN)*1048576;

        if (
'others' != $whichone$updraftplus->log("Beginning creation of dump of $whichone (split every: ".round($this->zip_split_every/10485761)." MB)");

        if (
is_string($create_from_dir) && !file_exists($create_from_dir)) {
            
$flag_error true;
            
$updraftplus->log("Does not exist: $create_from_dir");
            if (
'mu-plugins' == $whichone) {
                if (!
function_exists('get_mu_plugins')) include_once(ABSPATH.'wp-admin/includes/plugin.php');
                
$mu_plugins get_mu_plugins();
                if (
count($mu_plugins) == 0) {
                    
$updraftplus->log("There appear to be no mu-plugins to backup. Will not raise an error.");
                    
$flag_error false;
                }
            }
            if (
$flag_error$updraftplus->log(sprintf(__("%s - could not back this entity up; the corresponding directory does not exist (%s)"'updraftplus'), $whichone$create_from_dir), 'error');
            return 
false;
        }

        
$itext = empty($index) ? '' $index+1;
        
$base_path $backup_file_basename.'-'.$whichone.$itext.'.zip';
        
$full_path $this->updraft_dir.'/'.$base_path;
        
$time_now time();

        
// This is compatible with filenames which indicate increments, as it is looking only for the current increment
        
if (file_exists($full_path)) {
            
// Gather any further files that may also exist
            
$files_existing = array();
            while (
file_exists($full_path)) {
                
$files_existing[] = $base_path;
                
$time_mod = (int) @filemtime($full_path);// phpcs:ignore Generic.PHP.NoSilencedErrors.Discouraged
                
$updraftplus->log($base_path.": this file has already been created (age: ".round($time_now-$time_mod1)." s)");
                if (
$time_mod 100 && ($time_now $time_mod) < 30) {
                    
UpdraftPlus_Job_Scheduler::terminate_due_to_activity($base_path$time_now$time_mod);
                }
                
$index++;
                
// This is compatible with filenames which indicate increments, as it is looking only for the current increment
                
$base_path $backup_file_basename.'-'.$whichone.($index+1).'.zip';
                
$full_path $this->updraft_dir.'/'.$base_path;
            }
        }

        
// Temporary file, to be able to detect actual completion (upon which, it is renamed)

        // Jun-13 - be more aggressive in removing temporary files from earlier attempts - anything >=600 seconds old of this kind
        
UpdraftPlus_Filesystem_Functions::clean_temporary_files('_'.$updraftplus->file_nonce."-$whichone"600);

        
// Firstly, make sure that the temporary file is not already being written to - which can happen if a resumption takes place whilst an old run is still active
        
$zip_name $full_path.'.tmp';
        
$time_mod = (int) @filemtime($zip_name);// phpcs:ignore Generic.PHP.NoSilencedErrors.Discouraged
        
if (file_exists($zip_name) && $time_mod>100 && ($time_now-$time_mod)<30) {
            
UpdraftPlus_Job_Scheduler::terminate_due_to_activity($zip_name$time_now$time_mod);
        }

        if (
file_exists($zip_name)) {
            
$updraftplus->log("File exists ($zip_name), but was apparently not modified within the last 30 seconds, so we assume that any previous run has now terminated (time_mod=$time_mod, time_now=$time_now, diff=".($time_now-$time_mod).")");
        }

        
// Now, check for other forms of temporary file, which would indicate that some activity is going on (even if it hasn't made it into the main zip file yet)
        // Note: this doesn't catch PclZip temporary files
        
$d dir($this->updraft_dir);
        
$match '_'.$updraftplus->file_nonce."-".$whichone;
        while (
false !== ($e $d->read())) {
            if (
'.' == $e || '..' == $e || !is_file($this->updraft_dir.'/'.$e)) continue;
            
$ziparchive_match preg_match("/$match([0-9]+)?\.zip\.tmp\.([A-Za-z0-9]){6}?$/i"$e);
            
$binzip_match preg_match("/^zi([A-Za-z0-9]){6}$/"$e);
            
$pclzip_match preg_match("/^pclzip-[a-z0-9]+.tmp$/"$e);
            if (
$time_now-filemtime($this->updraft_dir.'/'.$e) < 30 && ($ziparchive_match || (!= $updraftplus->current_resumption && ($binzip_match || $pclzip_match)))) {
                
UpdraftPlus_Job_Scheduler::terminate_due_to_activity($this->updraft_dir.'/'.$e$time_nowfilemtime($this->updraft_dir.'/'.$e));
            }
        }
        @
$d->close();// phpcs:ignore Generic.PHP.NoSilencedErrors.Discouraged
        
clearstatcache();

        if (isset(
$files_existing)) {
            
// Because of zip-splitting, the mere fact that files exist is not enough to indicate that the entity is finished. For that, we need to also see that no subsequent file has been started.
            // Q. What if the previous runner died in between zips, and it is our job to start the next one? A. The next temporary file is created before finishing the former zip, so we are safe (and we are also safe-guarded by the updated value of the index being stored in the database).
            
return $files_existing;
        }

        
$this->log_account_space();

        
$this->zip_microtime_start microtime(true);

        
// The paths in the zip should then begin with '$whichone', having removed WP_CONTENT_DIR from the front
        
$zipcode $this->make_zipfile($create_from_dir$backup_file_basename$whichone);
        if (
true !== $zipcode) {
            
$updraftplus->log("ERROR: Zip failure: Could not create $whichone zip (".$this->index." / $index)");
            
$updraftplus->log(sprintf(__("Could not create %s zip. Consult the log file for more information."'updraftplus'), $whichone), 'error');
            
// The caller is required to update $index from $this->index
            
return false;
        } else {
            
$itext = empty($this->index) ? '' $this->index+1;
            
$full_path $this->updraft_dir.'/'.$backup_file_basename.'-'.$whichone.$itext.'.zip';
            if (
file_exists($full_path.'.tmp')) {
                if (@
filesize($full_path.'.tmp') === 0) {// phpcs:ignore Generic.PHP.NoSilencedErrors.Discouraged
                    
$updraftplus->log("Did not create $whichone zip (".$this->index.") - not needed");
                    @
unlink($full_path.'.tmp');// phpcs:ignore Generic.PHP.NoSilencedErrors.Discouraged
                
} else {
                
                    
$checksum_description '';
        
                    
$checksums $updraftplus->which_checksums();
        
                    foreach (
$checksums as $checksum) {
                    
                        
$cksum hash_file($checksum$full_path.'.tmp');
                        
$updraftplus->jobdata_set($checksum.'-'.$whichone.$this->index$cksum);
                        if (
$checksum_description$checksum_description .= ', ';
                        
$checksum_description .= "$checksum$cksum";
                    
                    }
                
                    @
rename($full_path.'.tmp'$full_path);// phpcs:ignore Generic.PHP.NoSilencedErrors.Discouraged
                    
$timetaken max(microtime(true)-$this->zip_microtime_start0.000001);
                    
$kbsize filesize($full_path)/1024;
                    
$rate round($kbsize/$timetaken1);
                    
$updraftplus->log("Created $whichone zip (".$this->index.") - ".round($kbsize1)." KB in ".round($timetaken1)." s ($rate KB/s) ($checksum_description)");
                    
// We can now remove any left-over temporary files from this job
                
}
            } elseif (
$this->index $original_index) {
                
$updraftplus->log("Did not create $whichone zip (".$this->index.") - not needed (2)");
                
// Added 12-Feb-2014 (to help multiple morefiles)
                
$this->index--;
            } else {
                
$updraftplus->log("Looked-for $whichone zip (".$this->index.") was not found (".basename($full_path).".tmp)"'warning');
            }
            
UpdraftPlus_Filesystem_Functions::clean_temporary_files('_'.$updraftplus->file_nonce."-$whichone"0);
        }

        
// Remove cache list files as well, if there are any
        
UpdraftPlus_Filesystem_Functions::clean_temporary_files('_'.$updraftplus->file_nonce."-$whichone"0true);

        
// Create the results array to send back (just the new ones, not any prior ones)
        
$files_existing = array();
        
$res_index $original_index;
        for (
$i $original_index$i<= $this->index$i++) {
            
$itext = empty($i) ? '' : ($i+1);
            
$full_path $this->updraft_dir.'/'.$backup_file_basename.'-'.$whichone.$itext.'.zip';
            if (
file_exists($full_path)) {
                
$files_existing[$res_index] = $backup_file_basename.'-'.$whichone.$itext.'.zip';
            }
            
$res_index++;
        }
        return 
$files_existing;
    }

    
/**
     * This method is for calling outside of a cloud_backup() context. It constructs a list of services for which prune operations should be attempted, and then calls prune_retained_backups() if necessary upon them.
     */
    
public function do_prune_standalone() {
        global 
$updraftplus;

        
$services = (array) $updraftplus->just_one($updraftplus->jobdata_get('service'));

        
$prune_services = array();

        foreach (
$services as $service) {
            if (
'none' === $service || '' == $service) continue;

            
$objname "UpdraftPlus_BackupModule_${service}";
            if (!
class_exists($objname) && file_exists(UPDRAFTPLUS_DIR.'/methods/'.$service.'.php')) {
                include_once(
UPDRAFTPLUS_DIR.'/methods/'.$service.'.php');
            }
            if (
class_exists($objname)) {
                
$remote_obj = new $objname;
                
$prune_services[$service]['all'] = array($remote_objnull);
            } else {
                
$updraftplus->log("Could not prune from service $service: remote method not found");
            }

        }

        if (!empty(
$prune_services)) $this->prune_retained_backups($prune_services);
    }

    
/**
     * Dispatch to the relevant function
     *
     * @param Array $backup_array List of archives for the backup
     */
    
public function cloud_backup($backup_array) {

        global 
$updraftplus;

        
$services = (array) $updraftplus->just_one($updraftplus->jobdata_get('service'));
        
$remote_storage_instances $updraftplus->jobdata_get('remote_storage_instances', array());

        
// We need to make sure that the loop below actually runs
        
if (empty($services)) $services = array('none');
        
        
$storage_objects_and_ids UpdraftPlus_Storage_Methods_Interface::get_enabled_storage_objects_and_ids($services$remote_storage_instances);

        
$total_instances_count 0;

        foreach (
$storage_objects_and_ids as $service) {
            if (
$service['object']->supports_feature('multi_options')) $total_instances_count += count($service['instance_settings']);
        }

        
$updraftplus->jobdata_set('jobstatus''clouduploading');

        
$updraftplus->register_wp_http_option_hooks();

        
$upload_status $updraftplus->jobdata_get('uploading_substatus');
        if (!
is_array($upload_status) || !isset($upload_status['t'])) {
            
$upload_status = array('i' => 0'p' => 0't' => max(1$total_instances_count)*count($backup_array));
            
$updraftplus->jobdata_set('uploading_substatus'$upload_status);
        }

        
$do_prune = array();

        
// If there was no check-in last time, then attempt a different service first - in case a time-out on the attempted service leads to no activity and everything stopping
        
if (count($services) >&& !empty($updraftplus->no_checkin_last_time)) {
            
$updraftplus->log('No check-in last time: will try a different remote service first');
            
array_push($servicesarray_shift($services));
            
// Make sure that the 'no worthwhile activity' detector isn't flumoxed by the starting of a new upload at 0%
            
if ($updraftplus->current_resumption 9$updraftplus->jobdata_set('uploaded_lastreset'$updraftplus->current_resumption);
            if (
== ($updraftplus->current_resumption 2) && count($services)>2array_push($servicesarray_shift($services));
        }

        
$errors_before_uploads $updraftplus->error_count();

        foreach (
$services as $ind => $service) {
            try {
                
$instance_id_count 0;
                
$total_instance_ids = ('none' !== $service && '' !== $service && $storage_objects_and_ids[$service]['object']->supports_feature('multi_options')) ? count($storage_objects_and_ids[$service]['instance_settings']) : 1;
    
                
// Used for logging by record_upload_chunk()
                
$this->current_service $service;
    
                
// Used when deciding whether to delete the local file
                
$this->last_storage_instance = ($ind+>= count($services) && $instance_id_count+>= $total_instance_ids && $errors_before_uploads == $updraftplus->error_count()) ? true false;
                
$log_extra $this->last_storage_instance ' (last)' '';
                
$updraftplus->log("Cloud backup selection (".($ind+1)."/".count($services)."): ".$service." with instance (".($instance_id_count+1)."/".$total_instance_ids.")".$log_extra);
                @
set_time_limit(UPDRAFTPLUS_SET_TIME_LIMIT);// phpcs:ignore Generic.PHP.NoSilencedErrors.Discouraged
    
                
if ('none' == $service || '' == $service) {
                    
$updraftplus->log('No remote despatch: user chose no remote backup service');
                    
// Still want to mark as "uploaded", to signal that nothing more needs doing. (Important on incremental runs with no cloud storage).
                    
foreach ($backup_array as $file) {
                        if (
$updraftplus->is_uploaded($file)) {
                            
$updraftplus->log("Already uploaded: $file");
                        } else {
                            
$updraftplus->uploaded_file($filetrue);
                        }
                    }
                    
$this->prune_retained_backups(array('none' => array('all' => array(nullnull))));
                } elseif (!empty(
$storage_objects_and_ids[$service]['object']) && !$storage_objects_and_ids[$service]['object']->supports_feature('multi_options')) {
                    
$remote_obj $storage_objects_and_ids[$service]['object'];
                    
                    
$do_prune array_merge_recursive($do_prune$this->upload_cloud($remote_obj$service$backup_array''));
                } elseif (!empty(
$storage_objects_and_ids[$service]['instance_settings'])) {
                    foreach (
$storage_objects_and_ids[$service]['instance_settings'] as $instance_id => $options) {
                    
                        if (
$instance_id_count 0) {
                            
$this->last_storage_instance = ($ind+>= count($services) && $instance_id_count+>= $total_instance_ids && $errors_before_uploads == $updraftplus->error_count()) ? true false;
                            
$log_extra $this->last_storage_instance ' (last)' '';
                            
$updraftplus->log("Cloud backup selection (".($ind+1)."/".count($services)."): ".$service." with instance (".($instance_id_count+1)."/".$total_instance_ids.")".$log_extra);
                        }
                    
                        
// Used for logging by record_upload_chunk()
                        
$this->current_instance $instance_id;
    
                        if (!isset(
$options['instance_enabled'])) $options['instance_enabled'] = 1;
    
                        
// if $remote_storage_instances is not empty then we are looping over a list of instances the user wants to backup to so we want to ignore if the instance is enabled or not
                        
if (== $options['instance_enabled'] || !empty($remote_storage_instances)) {
                            
$remote_obj $storage_objects_and_ids[$service]['object'];
                            
$remote_obj->set_options($optionstrue$instance_id);
                            
$do_prune array_merge_recursive($do_prune$this->upload_cloud($remote_obj$service$backup_array$instance_id));
                        } else {
                            
$updraftplus->log("This instance id ($instance_id) is set as inactive.");
                        }
    
                        
$instance_id_count++;
                    }
                }
            } catch (
Exception $e) {
                
$log_message 'Exception ('.get_class($e).') occurred during backup uploads to the '.$service.'. Exception Message: '.$e->getMessage().' (Code: '.$e->getCode().', line '.$e->getLine().' in '.$e->getFile().')';
                
$updraftplus->log($log_message);
                
error_log($log_message);
                
$updraftplus->log(sprintf(__('A PHP exception (%s) has occurred: %s''updraftplus'), get_class($e), $e->getMessage()), 'error');
            
// @codingStandardsIgnoreLine
            
} catch (Error $e) {
                
$log_message 'PHP Fatal error ('.get_class($e).') has occurred during backup uploads to the '.$service.'. Error Message: '.$e->getMessage().' (Code: '.$e->getCode().', line '.$e->getLine().' in '.$e->getFile().')';
                
$updraftplus->log($log_message);
                
error_log($log_message);
                
$updraftplus->log(sprintf(__('A PHP fatal error (%s) has occurred: %s''updraftplus'), get_class($e), $e->getMessage()), 'error');
            }
        }

        if (!empty(
$do_prune)) $this->prune_retained_backups($do_prune);

        
$updraftplus->register_wp_http_option_hooks(false);

    }

    
/**
     * This method will start the upload of the backups to the chosen remote storage method and return an array of files to be pruned and their location.
     *
     * @param  Object $remote_obj   - the remote storage object
     * @param  String $service      - the name of the service we are uploading to
     * @param  Array  $backup_array - an array that contains the backup files we want to upload
     * @param  String $instance_id  - the instance id we are using
     * @return Array                - an array with information about what files to prune and where they are located
     */
    
private function upload_cloud($remote_obj$service$backup_array$instance_id) {

        global 
$updraftplus;

        
$do_prune = array();

        if (
'' == $instance_id) {
            
$updraftplus->log("Beginning dispatch of backup to remote ($service)");
        } else {
            
$updraftplus->log("Beginning dispatch of backup to remote ($service) (instance identifier $instance_id)");
        }

        
$errors_before_uploads $updraftplus->error_count();

        
$sarray = array();
        foreach (
$backup_array as $bind => $file) {
            if (
$updraftplus->is_uploaded($file$service$instance_id)) {
                if (
'' == $instance_id) {
                    
$updraftplus->log("Already uploaded to $service$file"'notice'falsetrue);
                } else {
                    
$updraftplus->log("Already uploaded to $service / $instance_id$file"'notice'falsetrue);
                }
            } else {
                
$sarray[$bind] = $file;
            }
        }
        
        if (
count($sarray) > 0) {
            
$pass_to_prune $remote_obj->backup($sarray);
            if (
'remotesend' != $service) {
                
$do_prune[$service][$instance_id] = array($remote_obj$pass_to_prune);
            } else {
                
$do_prune[$service]['default'] = array($remote_obj$pass_to_prune);
            }

            
// Check there are no errors in the uploads, if none then call upload_completed() if it exists otherwise mark as complete
            
if ($errors_before_uploads == $updraftplus->error_count()) {
                if (
is_callable(array($remote_obj'upload_completed'))) {
                    
$result $remote_obj->upload_completed();
                    if (
$result$updraftplus->mark_upload_complete($service);
                } else {
                    
$updraftplus->mark_upload_complete($service);
                }
            }
        } else {
            
// We still need to make sure that prune is run on this remote storage method, even if all entities were previously uploaded
            
$do_prune[$service]['all'] = array($remote_objnull);
        }

        return 
$do_prune;
    }

    
/**
     * Group the backup history into sets for retention processing and indicate the retention rule to apply to each group. This is a 'default' function which just puts them all in together.
     *
     * @param Array $backup_history
     *
     * @return Array
     */
    
private function group_backups($backup_history) {
        return array(array(
'sets' => $backup_history'process_order' => 'keep_newest'));
    }
    
    
/**
     * Logs a message; with the message being logged to the database also only if that has not been done in the last 3 seconds. Useful for better overall performance on slow database servers with rapid logging.
     *
     * @uses UpdraftPlus::log()
     *
     * @param String $message - the message to log
     * @param String $level      - the log level
     */
    
private function log_with_db_occasionally($message$level 'notice') {
        global 
$updraftplus;
        static 
$last_db false;
        
        if (
time() > $last_db 3) {
            
$last_db time();
            
$skip_dblog false;
        } else {
            
$skip_dblog true;
        }
        
        return 
$updraftplus->log($message$levelfalse$skip_dblog);
    }
    
    
/**
     * Prunes historical backups, according to the user's settings
     *
     * @param Array $services - An associative array with list of services as key and remote object and boolean flag as values to prune on. This must be an array (i.e. it is not flexible like some other places)
     *
     * @return void
     */
    
public function prune_retained_backups($services) {

        global 
$updraftplus$wpdb;

        if (
'' != $updraftplus->jobdata_get('remotesend_info')) {
            
$updraftplus->log("Prune old backups from local store: skipping, as this was a remote send operation");
            return;
        }

        if (
method_exists($wpdb'check_connection') && (!defined('UPDRAFTPLUS_SUPPRESS_CONNECTION_CHECKS') || !UPDRAFTPLUS_SUPPRESS_CONNECTION_CHECKS)) {
            if (!
$wpdb->check_connection(false)) {
                
UpdraftPlus_Job_Scheduler::reschedule(60);
                
$updraftplus->log('It seems the database went away; scheduling a resumption and terminating for now');
                
UpdraftPlus_Job_Scheduler::record_still_alive();
                die;
            }
        }

        
// If they turned off deletion on local backups, then there is nothing to do
        
if (!UpdraftPlus_Options::get_updraft_option('updraft_delete_local'1) && == count($services) && array_key_exists('none'$services)) {
            
$updraftplus->log("Prune old backups from local store: nothing to do, since the user disabled local deletion and we are using local backups");
            return;
        }

        
$updraftplus->jobdata_set_multi(array('jobstatus' => 'pruning''prune' => 'begun'));

        
// Number of backups to retain - files
        
$updraft_retain UpdraftPlus_Options::get_updraft_option('updraft_retain'2);
        
$updraft_retain is_numeric($updraft_retain) ? $updraft_retain 1;

        
// Number of backups to retain - db
        
$updraft_retain_db UpdraftPlus_Options::get_updraft_option('updraft_retain_db'$updraft_retain);
        
$updraft_retain_db is_numeric($updraft_retain_db) ? $updraft_retain_db 1;

        
$updraftplus->log("Retain: beginning examination of existing backup sets; user setting: retain_files=$updraft_retain, retain_db=$updraft_retain_db");

        
// Returns an array, most recent first, of backup sets
        
$backup_history UpdraftPlus_Backup_History::get_history();
        
        
$ignored_because_imported = array();
        
        
// Remove non-native (imported) backups, which are neither counted nor pruned. It's neater to do these in advance, and log only one line.
        
$functional_backup_history $backup_history;
        foreach (
$functional_backup_history as $backup_time => $backup_to_examine) {
            if (isset(
$backup_to_examine['native']) && false == $backup_to_examine['native']) {
                
$ignored_because_imported[] = $backup_time;
                unset(
$functional_backup_history[$backup_time]);
            }
        }
        if (!empty(
$ignored_because_imported)) {
            
$updraftplus->log("These backup set(s) were imported from a remote location, so will not be counted or pruned. Skipping: ".implode(', '$ignored_because_imported));
        }
        
        
$backupable_entities $updraftplus->get_backupable_file_entities(true);

        
$database_backups_found = array();

        
$file_entities_backups_found = array();
        foreach (
$backupable_entities as $entity => $info) {
            
$file_entities_backups_found[$entity] = 0;
        }

        if (
false === ($backup_db_groups apply_filters('updraftplus_group_backups_for_pruning'false$functional_backup_history'db'))) {
            
$backup_db_groups $this->group_backups($functional_backup_history);
        }
        
$updraftplus->log("Number of backup sets in history: ".count($backup_history)."; groups (db): ".count($backup_db_groups));

        foreach (
$backup_db_groups as $group_id => $group) {
            
            
// N.B. The array returned by UpdraftPlus_Backup_History::get_history() is already sorted, with most-recent first

            
if (empty($group['sets']) || !is_array($group['sets'])) continue;
            
$sets $group['sets'];

            
// Sort the groups into the desired "keep this first" order
            
$process_order = (!empty($group['process_order']) && 'keep_oldest' == $group['process_order']) ? 'keep_oldest' 'keep_newest';
            if (
'keep_oldest' == $process_orderksort($sets);
            
            
$rule = !empty($group['rule']) ? $group['rule'] : array('after-howmany' => 0'after-period' => 0'every-period' => 1'every-howmany' => 1);
            
            foreach (
$sets as $backup_datestamp => $backup_to_examine) {

                
$files_to_prune = array();
                
$nonce = empty($backup_to_examine['nonce']) ? '???' $backup_to_examine['nonce'];

                
// $backup_to_examine is an array of file names, keyed on db/plugins/themes/uploads
                // The new backup_history array is saved afterwards, so remember to unset the ones that are to be deleted
                
$this->log_with_db_occasionally(sprintf("Examining (for databases) backup set with group_id=$group_id, nonce=%s, datestamp=%s (%s)"$nonce$backup_datestampgmdate('M d Y H:i:s'$backup_datestamp)));
                
                
// "Always Keep" Backups should be counted in the count of how many have been retained for purposes of the "how many to retain" count... but if that count is already matched, it's not a problem
                
$is_always_keep = !empty($backup_to_examine['always_keep']);
                
                
// Auto-backups are only counted or deleted once we have reached the retain limit - before that, they are skipped
                
$is_autobackup = !empty($backup_to_examine['autobackup']);
                
                
$remote_sent = (!empty($backup_to_examine['service']) && ((is_array($backup_to_examine['service']) && in_array('remotesend'$backup_to_examine['service'])) || 'remotesend' === $backup_to_examine['service'])) ? true false;

                
$any_deleted_via_filter_yet false;

                
// Databases
                
foreach ($backup_to_examine as $key => $data) {
                    if (
'db' != strtolower(substr($key02)) || '-size' == substr($key, -55)) continue;

                    if (empty(
$database_backups_found[$key])) $database_backups_found[$key] = 0;
                    
                    if (
$nonce == $updraftplus->nonce || $nonce == $updraftplus->file_nonce) {
                        
$this->log_with_db_occasionally("This backup set is the backup set just made, so will not be deleted.");
                        
$database_backups_found[$key]++;
                        continue;
                    }
                    
                    if (
$is_always_keep) {
                        if (
$database_backups_found[$key] < $updraft_retain) {
                            
$this->log_with_db_occasionally("This backup set ($backup_datestamp) was an 'Always Keep' backup, and we have not yet reached any retain limits, so it should be counted in the count of how many have been retained for purposes of the 'how many to retain' count. It will not be pruned. Skipping.");
                            
$database_backups_found[$key]++;
                        } else {
                            
$this->log_with_db_occasionally("This backup set ($backup_datestamp) was an 'Always Keep' backup, so it will not be pruned. Skipping.");
                        }
                        continue;
                    }
                    
                    if (
$is_autobackup) {
                        if (
$any_deleted_via_filter_yet) {
                            
$this->log_with_db_occasionally("This backup set ($backup_datestamp) was an automatic backup, but we have previously deleted a backup due to a limit, so it will be pruned (but not counted towards numerical limits).");
                            
$prune_it true;
                        } elseif (
$database_backups_found[$key] < $updraft_retain_db) {
                            
$this->log_with_db_occasionally("This backup set ($backup_datestamp) was an automatic backup, and we have not yet reached any retain limits, so it will not be counted or pruned. Skipping.");
                            continue;
                        } else {
                            
$this->log_with_db_occasionally("This backup set ($backup_datestamp) was an automatic backup, and we have already reached retain limits, so it will be pruned.");
                            
$prune_it true;
                        }
                    } else {
                        
$prune_it false;
                    }

                    if (
$remote_sent) {
                        
$prune_it true;
                        
$this->log_with_db_occasionally("$backup_datestamp$key: was sent to remote site; will remove from local record (only)");
                    }
                    
                    
// All non-auto backups must be run through this filter (in date order) regardless of the current state of $prune_it - so that filters are able to track state.
                    
$prune_it_before_filter $prune_it;

                    if (!
$is_autobackup$prune_it apply_filters('updraftplus_prune_or_not'$prune_it'db'$backup_datestamp$key$database_backups_found[$key], $rule$group_id);

                    
// Apply the final retention limit list (do not increase the 'retained' counter before seeing if the backup is being pruned for some other reason)
                    
if (!$prune_it && !$is_autobackup) {

                        if (
$database_backups_found[$key] + $updraft_retain_db) {
                            
$prune_it true;

                            
$fname is_string($data) ? $data $data[0];
                            
$this->log_with_db_occasionally("$backup_datestamp$key: this set includes a database (".$fname."); db count is now ".$database_backups_found[$key]);

                            
$this->log_with_db_occasionally("$backup_datestamp$key: over retain limit ($updraft_retain_db); will delete this database");
                        }
                    
                    }
                    
                    if (
$prune_it) {
                        if (!
$prune_it_before_filter$any_deleted_via_filter_yet true;

                        if (!empty(
$data)) {
                            
$size_key $key.'-size';
                            
$size = isset($backup_to_examine[$size_key]) ? $backup_to_examine[$size_key] : null;
                            foreach (
$services as $service => $instance_ids_to_prune) {
                                foreach (
$instance_ids_to_prune as $instance_id_to_prune => $sd) {
                                    if (
'none' != $service && '' != $service && $sd[0]->supports_feature('multi_options')) {
                                        
$storage_objects_and_ids UpdraftPlus_Storage_Methods_Interface::get_storage_objects_and_ids(array($service));
                                        if (
'all' == $instance_id_to_prune) {
                                            foreach (
$storage_objects_and_ids[$service]['instance_settings'] as $saved_instance_id => $options) {
                                                
$sd[0]->set_options($optionsfalse$saved_instance_id);
                                                
$this->prune_file($service$data$sd[0], $sd[1], array($size));
                                            }
                                        } else {
                                            
$opts $storage_objects_and_ids[$service]['instance_settings'][$instance_id_to_prune];
                                            
$sd[0]->set_options($optsfalse$instance_id_to_prune);
                                            
$this->prune_file($service$data$sd[0], $sd[1], array($size));
                                        }
                                    } else {
                                        
$this->prune_file($service$data$sd[0], $sd[1], array($size));
                                    }
                                }
                            }
                        }
                        unset(
$backup_to_examine[$key]);
                        
UpdraftPlus_Job_Scheduler::record_still_alive();
                    } elseif (!
$is_autobackup) {
                        
$database_backups_found[$key]++;
                    }

                    
$backup_to_examine $this->remove_backup_set_if_empty($backup_to_examine$backupable_entities);
                    if (empty(
$backup_to_examine)) {
                        unset(
$functional_backup_history[$backup_datestamp]);
                        unset(
$backup_history[$backup_datestamp]);
                        
$this->maybe_save_backup_history_and_reschedule($backup_history);
                    } else {
                        
$functional_backup_history[$backup_datestamp] = $backup_to_examine;
                        
$backup_history[$backup_datestamp] = $backup_to_examine;
                    }
                }
            }
        }

        if (
false === ($backup_files_groups apply_filters('updraftplus_group_backups_for_pruning'false$functional_backup_history'files'))) {
            
$backup_files_groups $this->group_backups($functional_backup_history);
        }

        
$updraftplus->log("Number of backup sets in history: ".count($backup_history)."; groups (files): ".count($backup_files_groups));
        
        
// Now again - this time for the files
        
foreach ($backup_files_groups as $group_id => $group) {
            
            
// N.B. The array returned by UpdraftPlus_Backup_History::get_history() is already sorted, with most-recent first

            
if (empty($group['sets']) || !is_array($group['sets'])) continue;
            
$sets $group['sets'];
            
            
// Sort the groups into the desired "keep this first" order
            
$process_order = (!empty($group['process_order']) && 'keep_oldest' == $group['process_order']) ? 'keep_oldest' 'keep_newest';
            
// Youngest - i.e. smallest epoch - first
            
if ('keep_oldest' == $process_orderksort($sets);

            
$rule = !empty($group['rule']) ? $group['rule'] : array('after-howmany' => 0'after-period' => 0'every-period' => 1'every-howmany' => 1);
            
            foreach (
$sets as $backup_datestamp => $backup_to_examine) {

                
$files_to_prune = array();
                
$nonce = empty($backup_to_examine['nonce']) ? '???' $backup_to_examine['nonce'];

                
// $backup_to_examine is an array of file names, keyed on db/plugins/themes/uploads
                // The new backup_history array is saved afterwards, so remember to unset the ones that are to be deleted
                
$this->log_with_db_occasionally(sprintf("Examining (for files) backup set with nonce=%s, datestamp=%s (%s)"$nonce$backup_datestampgmdate('M d Y H:i:s'$backup_datestamp)));

                
// "Always Keep" Backups should be counted in the count of how many have been retained for purposes of the "how many to retain" count... but if that count is already matched, it's not a problem
                
$is_always_keep = !empty($backup_to_examine['always_keep']);
                
                
// Auto-backups are only counted or deleted once we have reached the retain limit - before that, they are skipped
                
$is_autobackup = !empty($backup_to_examine['autobackup']);

                
$remote_sent = (!empty($backup_to_examine['service']) && ((is_array($backup_to_examine['service']) && in_array('remotesend'$backup_to_examine['service'])) || 'remotesend' === $backup_to_examine['service'])) ? true false;

                
$any_deleted_via_filter_yet false;
        
                
$file_sizes = array();

                
// Files
                
foreach ($backupable_entities as $entity => $info) {
                    if (!empty(
$backup_to_examine[$entity])) {
                    
                        
// This should only be able to happen if you import backups with a future timestamp
                        
if ($nonce == $updraftplus->nonce || $nonce == $updraftplus->file_nonce) {
                            
$updraftplus->log("This backup set is the backup set just made, so will not be deleted.");
                            
$file_entities_backups_found[$entity]++;
                            continue;
                        }

                        if (
$is_always_keep) {
                            if (
$file_entities_backups_found[$entity] < $updraft_retain) {
                                
$this->log_with_db_occasionally("This backup set ($backup_datestamp) was an 'Always Keep' backup, and we have not yet reached any retain limits, so it should be counted in the count of how many have been retained for purposes of the 'how many to retain' count. It will not be pruned. Skipping.");
                                
$file_entities_backups_found[$entity]++;
                            } else {
                                
$this->log_with_db_occasionally("This backup set ($backup_datestamp) was an 'Always Keep' backup, so it will not be pruned. Skipping.");
                            }
                            continue;
                        }
                        
                        if (
$is_autobackup) {
                            if (
$any_deleted_via_filter_yet) {
                                
$this->log_with_db_occasionally("This backup set was an automatic backup, but we have previously deleted a backup due to a limit, so it will be pruned (but not counted towards numerical limits).");
                                
$prune_it true;
                            } elseif (
$file_entities_backups_found[$entity] < $updraft_retain) {
                                
$this->log_with_db_occasionally("This backup set ($backup_datestamp) was an automatic backup, and we have not yet reached any retain limits, so it will not be counted or pruned. Skipping.");
                                continue;
                            } else {
                                
$this->log_with_db_occasionally("This backup set ($backup_datestamp) was an automatic backup, and we have already reached retain limits, so it will be pruned.");
                                
$prune_it true;
                            }
                        } else {
                            
$prune_it false;
                        }

                        if (
$remote_sent) {
                            
$prune_it true;
                        }

                        
// All non-auto backups must be run through this filter (in date order) regardless of the current state of $prune_it - so that filters are able to track state.
                        
$prune_it_before_filter $prune_it;
                        if (!
$is_autobackup$prune_it apply_filters('updraftplus_prune_or_not'$prune_it'files'$backup_datestamp$entity$file_entities_backups_found[$entity], $rule$group_id);

                        
// The "more than maximum to keep?" counter should not be increased until we actually know that the set is being kept. Before verison 1.11.22, we checked this before running the filter, which resulted in the counter being increased for sets that got pruned via the filter (i.e. not kept) - and too many backups were thus deleted
                        
if (!$prune_it && !$is_autobackup) {
                            if (
$file_entities_backups_found[$entity] >= $updraft_retain) {
                                
$this->log_with_db_occasionally("$entity: over retain limit ($updraft_retain); will delete this file entity");
                                
$prune_it true;
                            }
                        }
                        
                        if (
$prune_it) {
                            if (!
$prune_it_before_filter$any_deleted_via_filter_yet true;
                            
$prune_this $backup_to_examine[$entity];
                            if (
is_string($prune_this)) $prune_this = array($prune_this);

                            foreach (
$prune_this as $k => $prune_file) {
                                if (
$remote_sent) {
                                    
$updraftplus->log("$entity$backup_datestamp: was sent to remote site; will remove from local record (only)");
                                }
                                
$size_key = (== $k) ? $entity.'-size' $entity.$k.'-size';
                                
$size = (isset($backup_to_examine[$size_key])) ? $backup_to_examine[$size_key] : null;
                                
$files_to_prune[] = $prune_file;
                                
$file_sizes[] = $size;
                            }
                            unset(
$backup_to_examine[$entity]);
                            
                        } elseif (!
$is_autobackup) {
                            
$file_entities_backups_found[$entity]++;
                        }
                    }
                }

                
// Sending an empty array is not itself a problem - except that the remote storage method may not check that before setting up a connection, which can waste time: especially if this is done every time around the loop.
                
if (!empty($files_to_prune)) {
                    
// Actually delete the files
                    
foreach ($services as $service => $instance_ids_to_prune) {
                        foreach (
$instance_ids_to_prune as $instance_id_to_prune => $sd) {
                            if (
"none" != $service && '' != $service && $sd[0]->supports_feature('multi_options')) {
                                
$storage_objects_and_ids UpdraftPlus_Storage_Methods_Interface::get_storage_objects_and_ids(array($service));
                                if (
'all' == $instance_id_to_prune) {
                                    foreach (
$storage_objects_and_ids[$service]['instance_settings'] as $saved_instance_id => $options) {
                                        
$sd[0]->set_options($optionsfalse$saved_instance_id);
                                        
$this->prune_file($service$files_to_prune$sd[0], $sd[1], array($size));
                                    }
                                } else {
                                    
$opts $storage_objects_and_ids[$service]['instance_settings'][$instance_id_to_prune];
                                    
$sd[0]->set_options($optsfalse$instance_id_to_prune);
                                    
$this->prune_file($service$files_to_prune$sd[0], $sd[1], array($size));
                                }
                            } else {
                                
$this->prune_file($service$files_to_prune$sd[0], $sd[1], array($size));
                            }
                            
UpdraftPlus_Job_Scheduler::record_still_alive();
                        }
                    }
                }

                
$backup_to_examine $this->remove_backup_set_if_empty($backup_to_examine$backupable_entities);
                if (empty(
$backup_to_examine)) {
// unset($functional_backup_history[$backup_datestamp]);
                    
unset($backup_history[$backup_datestamp]);
                    
$this->maybe_save_backup_history_and_reschedule($backup_history);
                } else {
// $functional_backup_history[$backup_datestamp] = $backup_to_examine;
                    
$backup_history[$backup_datestamp] = $backup_to_examine;
                }

            
// Loop over backup sets
            
}
            
        
// Look over backup groups
        
}

        
$updraftplus->log("Retain: saving new backup history (sets now: ".count($backup_history).") and finishing retain operation");
        
UpdraftPlus_Backup_History::save_history($backup_historyfalse);

        
do_action('updraftplus_prune_retained_backups_finished');
        
        
$updraftplus->jobdata_set('prune''finished');

    }

    
/**
     * The purpose of this is to save the backup history periodically - for the benefit of setups where the pruning takes longer than the total allow run time (e.g. if the network communications to the remote storage have delays in, and there are a lot of sets to scan)
     *
     * @param Array $backup_history - the backup history to possible save
     */
    
private function maybe_save_backup_history_and_reschedule($backup_history) {
        static 
$last_saved_at 0;
        if (!
$last_saved_at$last_saved_at time();
        if (
time() - $last_saved_at >= 10) {
            global 
$updraftplus;
            
$updraftplus->log("Retain: saving new backup history, because at least 10 seconds have passed since the last save (sets now: ".count($backup_history).")");
            
UpdraftPlus_Backup_History::save_history($backup_historyfalse);
            
UpdraftPlus_Job_Scheduler::something_useful_happened();
            
$last_saved_at time();
        }
    }
    
    
/**
     * Examine a backup set; if it is empty (no files or DB), then remove the associated log file
     *
     * @param Array $backup_to_examine     - backup set
     * @param Array $backupable_entities - compare with this list of backup entities
     *
     * @return Array|Boolean - if it was empty, false is returned
     */
    
private function remove_backup_set_if_empty($backup_to_examine$backupable_entities) {
    
        global 
$updraftplus;

        
// Get new result, post-deletion; anything left in this set?
        
$contains_files 0;
        foreach (
$backupable_entities as $entity => $info) {
            if (isset(
$backup_to_examine[$entity])) {
                
$contains_files 1;
                break;
            }
        }

        
$contains_db 0;
        foreach (
$backup_to_examine as $key => $data) {
            if (
'db' == strtolower(substr($key02)) && '-size' != substr($key, -55)) {
                
$contains_db 1;
                break;
            }
        }

        
// Delete backup set completely if empty, o/w just remove DB
        // We search on the four keys which represent data, allowing other keys to be used to track other things
        
if (!$contains_files && !$contains_db) {
            
$updraftplus->log("This backup set is now empty; will remove from history");
            if (isset(
$backup_to_examine['nonce'])) {
                
$fullpath $this->updraft_dir."/log.".$backup_to_examine['nonce'].".txt";
                if (
is_file($fullpath)) {
                    
$updraftplus->log("Deleting log file (log.".$backup_to_examine['nonce'].".txt)");
                    @
unlink($fullpath);// phpcs:ignore Generic.PHP.NoSilencedErrors.Discouraged
                
} else {
                    
$updraftplus->log("Corresponding log file (log.".$backup_to_examine['nonce'].".txt) not found - must have already been deleted");
                }
            } else {
                
$updraftplus->log("No nonce record found in the backup set, so cannot delete any remaining log file");
            }
            return 
false;
        } else {
            
$updraftplus->log("This backup set remains non-empty (f=$contains_files/d=$contains_db); will retain in history");
            return 
$backup_to_examine;
        }
        
    }
    
    
/**
     * Prune files from remote and local storage
     *
     * @param String       $service         Service to prune (one only)
     * @param Array|String $dofiles         An array of files (or a single string for one file)
     * @param Array           $method_object   specific method object
     * @param Array           $object_passback specific passback object
     * @param Array           $file_sizes      size of files
     */
    
private function prune_file($service$dofiles$method_object null$object_passback null$file_sizes = array()) {
        global 
$updraftplus;
        if (!
is_array($dofiles)) $dofiles = array($dofiles);
        
        if (!
apply_filters('updraftplus_prune_file'true$dofiles$service$method_object$object_passback$file_sizes)) {
            
$updraftplus->log("Prune: service=$service: skipped via filter");
        }
        
        foreach (
$dofiles as $dofile) {
            if (empty(
$dofile)) continue;
            
$updraftplus->log("Delete file: $dofile, service=$service");
            
$fullpath $this->updraft_dir.'/'.$dofile;
            
// delete it if it's locally available
            
if (file_exists($fullpath)) {
                
$updraftplus->log("Deleting local copy ($dofile)");
                
unlink($fullpath);
            }
        }
        
// Despatch to the particular method's deletion routine
        
if (!is_null($method_object)) $method_object->delete($dofiles$object_passback$file_sizes);
    }

    
/**
     * The purpose of this function is to make sure that the options table is put in the database first, then the users table, then the site + blogs tables (if present - multisite), then the usermeta table; and after that the core WP tables - so that when restoring we restore the core tables first
     *
     * @param Array $a_arr First array to be compared
     * @param Array $b_arr Second array to be compared
     * @return Integer - according to the rules of usort()
     */
    
private function backup_db_sorttables($a_arr$b_arr) {

        
$a $a_arr['name'];
        
$a_table_type $a_arr['type'];
        
$b $b_arr['name'];
        
$b_table_type $b_arr['type'];
    
        
// Views must always go after tables (since they can depend upon them)
        
if ('VIEW' == $a_table_type && 'VIEW' != $b_table_type) return 1;
        if (
'VIEW' == $b_table_type && 'VIEW' != $a_table_type) return -1;
    
        if (
'wp' != $this->whichdb) return strcmp($a$b);

        global 
$updraftplus;
        if (
$a == $b) return 0;
        
$our_table_prefix $this->table_prefix_raw;
        if (
$a == $our_table_prefix.'options') return -1;
        if (
$b == $our_table_prefix.'options') return 1;
        if (
$a == $our_table_prefix.'site') return -1;
        if (
$b == $our_table_prefix.'site') return 1;
        if (
$a == $our_table_prefix.'blogs') return -1;
        if (
$b == $our_table_prefix.'blogs') return 1;
        if (
$a == $our_table_prefix.'users') return -1;
        if (
$b == $our_table_prefix.'users') return 1;
        if (
$a == $our_table_prefix.'usermeta') return -1;
        if (
$b == $our_table_prefix.'usermeta') return 1;

        if (empty(
$our_table_prefix)) return strcmp($a$b);

        try {
            
$core_tables array_merge($this->wpdb_obj->tables$this->wpdb_obj->global_tables$this->wpdb_obj->ms_global_tables);
        } catch (
Exception $e) {
            
$updraftplus->log($e->getMessage());
        }
        
        if (empty(
$core_tables)) $core_tables = array('terms''term_taxonomy''termmeta''term_relationships''commentmeta''comments''links''postmeta''posts''site''sitemeta''blogs''blogversions''blogmeta');

        global 
$updraftplus;
        
$na UpdraftPlus_Manipulation_Functions::str_replace_once($our_table_prefix''$a);
        
$nb UpdraftPlus_Manipulation_Functions::str_replace_once($our_table_prefix''$b);
        if (
in_array($na$core_tables) && !in_array($nb$core_tables)) return -1;
        if (!
in_array($na$core_tables) && in_array($nb$core_tables)) return 1;
        return 
strcmp($a$b);
    }

    
/**
     * Log the amount account space free/used, if possible
     */
    
private function log_account_space() {
        
// Don't waste time if space is huge
        
if (!empty($this->account_space_oodles)) return;
        global 
$updraftplus;
        
$hosting_bytes_free $updraftplus->get_hosting_disk_quota_free();
        if (
is_array($hosting_bytes_free)) {
            
$perc round(100*$hosting_bytes_free[1]/(max($hosting_bytes_free[2], 1)), 1);
            
$updraftplus->log(sprintf('Free disk space in account: %s (%s used)'round($hosting_bytes_free[3]/10485761)." MB""$perc %"));
        }
    }

    
/**
     * Returns the basename up to and including the nonce (but not the entity)
     *
     * @param Integer $use_time epoch time to use
     * @return String
     */
    
private function get_backup_file_basename_from_time($use_time) {
        global 
$updraftplus;
        return 
apply_filters('updraftplus_get_backup_file_basename_from_time''backup_'.get_date_from_gmt(gmdate('Y-m-d H:i:s'$use_time), 'Y-m-d-Hi').'_'.$this->site_name.'_'.$updraftplus->file_nonce$use_time$this->site_name);
    }

    
/**
     * Find the zip files for a given nonce
     *
     * @param String $dir          - directory to look in
     * @param Strign $match_nonce - backup ID to match
     *
     * @return Array
     */
    
private function find_existing_zips($dir$match_nonce) {
        
$zips = array();
        if (
$handle opendir($dir)) {
            while (
false !== ($entry readdir($handle))) {
                if (
"." != $entry && ".." != $entry) {
                    if (
preg_match('/^backup_(\d{4})-(\d{2})-(\d{2})-(\d{2})(\d{2})_.*_([0-9a-f]{12})-([\-a-z]+)([0-9]+)?\.zip$/i'$entry$matches)) {
                        if (
$matches[6] !== $match_nonce) continue;
                        
$timestamp mktime($matches[4], $matches[5], 0$matches[2], $matches[3], $matches[1]);
                        
$entity $matches[7];
                        
$index = empty($matches[8]) ? '0' $matches[8];
                        
$zips[$entity][$index] = array($timestamp$entry);
                    }
                }
            }
        }
        return 
$zips;
    }

    
/**
     * Get information on whether a particular file exists in a set
     *
     * @param  Array   $files  should be an array as returned by find_existing_zips()]
     * @param  String  $entity entty of the file (e.g. 'plugins')
     * @param  Integer $index  Index within the files array
     * @return String|Boolean - false if the file does not exist; otherwise, the basename
     */
    
private function file_exists($files$entity$index 0) {
        if (isset(
$files[$entity]) && isset($files[$entity][$index])) {
            
$file $files[$entity][$index];
            
// Return the filename
            
return $file[1];
        } else {
            return 
false;
        }
    }

    
/**
     * This function is resumable
     *
     * @param String $job_status Current status
     *
     * @return Array - array of backed-up files
     */
    
private function backup_dirs($job_status) {

        global 
$updraftplus;

        if (!
$updraftplus->backup_time$updraftplus->backup_time_nonce();

        
$use_time $updraftplus->backup_time;
        
$backup_file_basename $this->get_backup_file_basename_from_time($use_time);

        
$backup_array = array();

        
// Was there a check-in last time? If not, then reduce the amount of data attempted
        
if ('finished' != $job_status && $updraftplus->current_resumption >= 2) {

            
// NOTYET: Possible amendment to original algorithm; not just no check-in, but if the check in was very early (can happen if we get a very early checkin for some trivial operation, then attempt something too big)

            // 03-Sep-2015 - came across a case (HS#2052) where there apparently was a check-in 'last time', but no resumption was scheduled because the 'useful_checkin' jobdata was *not* last time - which must indicate dying at a very unfortunate/unlikely point in the code. As a result, the split was not auto-reduced. Consequently, we've added !$updraftplus->newresumption_scheduled as a condition on the first check here (it was already on the second), as if no resumption is scheduled then whatever checkin there was last time was only partial. This was on GoDaddy, for which a number of curious I/O event combinations have been seen in recent months - their platform appears to have some odd behaviour when PHP is killed off.
            // 04-Sep-2015 - move the '$updraftplus->current_resumption<=10' check to the inner loop (instead of applying to this whole section), as I see no reason for that restriction (case seen in HS#2064 where it was required on resumption 15)
            
if (!empty($updraftplus->no_checkin_last_time) || !$updraftplus->newresumption_scheduled) {
                
// Apr 2015: !$updraftplus->newresumption_scheduled added after seeing a log where there was no activity on resumption 9, and extra resumption 10 then tried the same operation.
                
if ($updraftplus->current_resumption $updraftplus->last_successful_resumption || !$updraftplus->newresumption_scheduled) {
                    
$this->try_split true;
                } elseif (
$updraftplus->current_resumption <= 10) {
                    
$maxzipbatch $updraftplus->jobdata_get('maxzipbatch'26214400);
                    if ((int) 
$maxzipbatch 1$maxzipbatch 26214400;
                    
$new_maxzipbatch max(floor($maxzipbatch 0.75), 20971520);
                    if (
$new_maxzipbatch $maxzipbatch) {
                        
$updraftplus->log("No check-in was detected on the previous run - as a result, we are reducing the batch amount (old=$maxzipbatch, new=$new_maxzipbatch)");
                        
$updraftplus->jobdata_set('maxzipbatch'$new_maxzipbatch);
                        
$updraftplus->jobdata_set('maxzipbatch_ceiling'$new_maxzipbatch);
                    }
                }
            }
        }

        if (
'finished' != $job_status && !UpdraftPlus_Filesystem_Functions::really_is_writable($this->updraft_dir)) {
            
$updraftplus->log("Backup directory (".$this->updraft_dir.") is not writable, or does not exist");
            
$updraftplus->log(sprintf(__("Backup directory (%s) is not writable, or does not exist."'updraftplus'), $this->updraft_dir), 'error');
            return array();
        }

        
$this->job_file_entities $updraftplus->jobdata_get('job_file_entities');
        
        
// This is just used for the visual feedback (via the 'substatus' key)
        
$which_entity 0;
        
// e.g. plugins, themes, uploads, others
        // $whichdir might be an array (if $youwhat is 'more')

        // Returns an array (keyed off the entity) of ($timestamp, $filename) arrays
        
$existing_zips $this->find_existing_zips($this->updraft_dir$updraftplus->file_nonce);

        
$possible_backups $updraftplus->get_backupable_file_entities(true);

        foreach (
$possible_backups as $youwhat => $whichdir) {

            if (!isset(
$this->job_file_entities[$youwhat])) {
                
$updraftplus->log("No backup of $youwhat: excluded by user's options");
                continue;
            }

            
$index = (int) $this->job_file_entities[$youwhat]['index'];
            if (empty(
$index)) $index=0;
            
$indextext = (== $index) ? '' : (1+$index);

            
$zip_file $this->updraft_dir.'/'.$backup_file_basename.'-'.$youwhat.$indextext.'.zip';

            
// Split needed?
            
$split_every max((int) $updraftplus->jobdata_get('split_every'), 250);

            if (
false != ($existing_file $this->file_exists($existing_zips$youwhat$index)) && filesize($this->updraft_dir.'/'.$existing_file) > $split_every*1048576) {
                
$index++;
                
$this->job_file_entities[$youwhat]['index'] = $index;
                
$updraftplus->jobdata_set('job_file_entities'$this->job_file_entities);
            }

            
// Populate prior parts of $backup_array, if we're on a subsequent zip file
            
if ($index 0) {
                for (
$i=0$i<$index$i++) {
                    
$itext = (== $i) ? '' : ($i+1);
                    
// Get the previously-stored filename if possible (which should be always); failing that, base it on the current run

                    
$zip_file = (isset($this->backup_files_array[$youwhat]) && isset($this->backup_files_array[$youwhat][$i])) ? $this->backup_files_array[$youwhat][$i] : $backup_file_basename.'-'.$youwhat.$itext.'.zip';

                    
$backup_array[$youwhat][$i] = $zip_file;
                    
$z $this->updraft_dir.'/'.$zip_file;
                    
$itext = (== $i) ? '' $i;

                    
$fs_key $youwhat.$itext.'-size';
                    if (
file_exists($z)) {
                        
$backup_array[$fs_key] = filesize($z);
                    } elseif (isset(
$this->backup_files_array[$fs_key])) {
                        
$backup_array[$fs_key] = $this->backup_files_array[$fs_key];
                    }
                }
            }

            
// I am not certain that all the conditions in here are possible. But there's no harm.
            
if ('finished' == $job_status) {
                
// Add the final part of the array
                
if ($index 0) {
                    
$zip_file = (isset($this->backup_files_array[$youwhat]) && isset($this->backup_files_array[$youwhat][$index])) ? $this->backup_files_array[$youwhat][$index] : $backup_file_basename.'-'.$youwhat.($index+1).'.zip';
                    
$z $this->updraft_dir.'/'.$zip_file;
                    
$fs_key $youwhat.$index.'-size';
                    
$backup_array[$youwhat][$index] = $zip_file;
                    if (
file_exists($z)) {
                        
$backup_array[$fs_key] = filesize($z);
                    } elseif (isset(
$this->backup_files_array[$fs_key])) {
                        
$backup_array[$fs_key] = $this->backup_files_array[$fs_key];
                    }
                } else {
                    
$zip_file = (isset($this->backup_files_array[$youwhat]) && isset($this->backup_files_array[$youwhat][0])) ? $this->backup_files_array[$youwhat][0] : $backup_file_basename.'-'.$youwhat.'.zip';

                    
$backup_array[$youwhat] = $zip_file;
                    
$fs_key=$youwhat.'-size';

                    if (
file_exists($zip_file)) {
                        
$backup_array[$fs_key] = filesize($zip_file);
                    } elseif (isset(
$this->backup_files_array[$fs_key])) {
                        
$backup_array[$fs_key] = $this->backup_files_array[$fs_key];
                    }
                }
            } else {

                
$which_entity++;
                
$updraftplus->jobdata_set('filecreating_substatus', array('e' => $youwhat'i' => $which_entity't' => count($this->job_file_entities)));

                if (
'others' == $youwhat$updraftplus->log("Beginning backup of other directories found in the content directory (index: $index)");

                
// Apply a filter to allow add-ons to provide their own method for creating a zip of the entity
                
$created apply_filters('updraftplus_backup_makezip_'.$youwhat$whichdir$backup_file_basename$index);

                
// If the filter did not lead to something being created, then use the default method
                
if ($created === $whichdir) {

                    
// http://www.phpconcept.net/pclzip/user-guide/53
                    /* First parameter to create is:
                        An array of filenames or dirnames,
                        or
                        A string containing the filename or a dirname,
                        or
                        A string containing a list of filename or dirname separated by a comma.
                    */

                    
if ('others' == $youwhat) {
                        
$dirlist $updraftplus->backup_others_dirlist(true);
                    } elseif (
'uploads' == $youwhat) {
                        
$dirlist $updraftplus->backup_uploads_dirlist(true);
                    } else {
                        
$dirlist $whichdir;
                        if (
is_array($dirlist)) $dirlist array_shift($dirlist);
                    }

                    if (!empty(
$dirlist)) {
                        
$created $this->create_zip($dirlist$youwhat$backup_file_basename$index);
                        
// Now, store the results
                        
if (!is_string($created) && !is_array($created)) $updraftplus->log("$youwhat: create_zip returned an error");
                    } else {
                        
$updraftplus->log("No backup of $youwhat: there was nothing found to backup");
                    }
                }

                if (
$created != $whichdir && (is_string($created) || is_array($created))) {
                    if (
is_string($created)) $created =array($created);
                    foreach (
$created as $fname) {
                        
$backup_array[$youwhat][$index] = $fname;
                        
$itext = (== $index) ? '' $index;
                        
$index++;
                        
$backup_array[$youwhat.$itext.'-size'] = filesize($this->updraft_dir.'/'.$fname);
                    }
                }

                
$this->job_file_entities[$youwhat]['index'] = $this->index;
                
$updraftplus->jobdata_set('job_file_entities'$this->job_file_entities);

            }
        }

        return 
$backup_array;
    }

    
/**
     * This uses a saved status indicator; its only purpose is to indicate *total* completion; there is no actual danger, just wasted time, in resuming when it was not needed. So the saved status indicator just helps save resources.
     *
     * @param Integer $resumption_no Check for first run
     *
     * @return Array
     */
    
public function resumable_backup_of_files($resumption_no) {
        global 
$updraftplus;
        
// Backup directories and return a numerically indexed array of file paths to the backup files
        
$bfiles_status $updraftplus->jobdata_get('backup_files');
        
$this->backup_files_array $updraftplus->jobdata_get('backup_files_array');

        if (!
is_array($this->backup_files_array)) $this->backup_files_array = array();
        if (
'finished' == $bfiles_status) {
            
$updraftplus->log("Creation of backups of directories: already finished");
            
// Check for recent activity
            
foreach ($this->backup_files_array as $files) {
                if (!
is_array($files)) $files =array($files);
                foreach (
$files as $file$updraftplus->check_recent_modification($this->updraft_dir.'/'.$file);
            }
        } elseif (
'begun' == $bfiles_status) {
            
$this->first_run apply_filters('updraftplus_filerun_firstrun'0);
            if (
$resumption_no $this->first_run) {
                
$updraftplus->log("Creation of backups of directories: had begun; will resume");
            } else {
                
$updraftplus->log("Creation of backups of directories: beginning");
            }
            
$updraftplus->jobdata_set('jobstatus''filescreating');
            
$this->backup_files_array $this->backup_dirs($bfiles_status);
            
$updraftplus->jobdata_set('backup_files_array'$this->backup_files_array);
            
$updraftplus->jobdata_set('backup_files''finished');
            
$updraftplus->jobdata_set('jobstatus''filescreated');
        } else {
            
// This is not necessarily a backup run which is meant to contain files at all
            
$updraftplus->log('This backup run is not intended for files - skipping');
            return array();
        }

        
/*
        // DOES NOT WORK: there is no crash-safe way to do this here - have to be renamed at cloud-upload time instead
        $new_backup_array = array();
        foreach ($backup_array as $entity => $files) {
            if (!is_array($files)) $files=array($files);
            $outof = count($files);
            foreach ($files as $ind => $file) {
                $nval = $file;
                if (preg_match('/^(backup_[\-0-9]{15}_.*_[0-9a-f]{12}-[\-a-z]+)([0-9]+)?\.zip$/i', $file, $matches)) {
                    $num = max((int)$matches[2],1);
                    $new = $matches[1].$num.'of'.$outof.'.zip';
                    if (file_exists($this->updraft_dir.'/'.$file)) {
                        if (@rename($this->updraft_dir.'/'.$file, $this->updraft_dir.'/'.$new)) {
                            $updraftplus->log(sprintf("Renaming: %s to %s", $file, $new));
                            $nval = $new;
                        }
                    } elseif (file_exists($this->updraft_dir.'/'.$new)) {
                        $nval = $new;
                    }
                }
                $new_backup_array[$entity][$ind] = $nval;
            }
        }
        */
        
return $this->backup_files_array;
    }

    
/**
     * This function is resumable, using the following method:
     * Each table is written out to ($final_filename).table.tmp
     * When the writing finishes, it is renamed to ($final_filename).table
     * When all tables are finished, they are concatenated into the final file
     *
     * @param String $already_done Status of backup
     * @param String $whichdb      Indicated which database is being backed up
     * @param Array  $dbinfo       is only used when whichdb != 'wp'; and the keys should be: user, pass, name, host, prefix
     *
     * @return Boolean|String - the basename of the database backup, or false for failure
     */
    
public function backup_db($already_done 'begun'$whichdb 'wp'$dbinfo = array()) {

        global 
$updraftplus$wpdb;

        
$this->whichdb $whichdb;
        
$this->whichdb_suffix = ('wp' == $whichdb) ? '' $whichdb;

        if (!
$updraftplus->backup_time$updraftplus->backup_time_nonce();
        if (!
$updraftplus->opened_log_time$updraftplus->logfile_open($updraftplus->nonce);

        if (
'wp' == $this->whichdb) {
            
$this->wpdb_obj $wpdb;
            
// The table prefix after being filtered - i.e. what filters what we'll actually backup
            
$this->table_prefix $updraftplus->get_table_prefix(true);
            
// The unfiltered table prefix - i.e. the real prefix that things are relative to
            
$this->table_prefix_raw $updraftplus->get_table_prefix(false);
            
$dbinfo['host'] = DB_HOST;
            
$dbinfo['name'] = DB_NAME;
            
$dbinfo['user'] = DB_USER;
            
$dbinfo['pass'] = DB_PASSWORD;
        } else {
            if (!
is_array($dbinfo) || empty($dbinfo['host'])) return false;
            
// The methods that we may use: check_connection (WP>=3.9), get_results, get_row, query
            
$this->wpdb_obj = new UpdraftPlus_WPDB_OtherDB($dbinfo['user'], $dbinfo['pass'], $dbinfo['name'], $dbinfo['host']);
            if (!empty(
$this->wpdb_obj->error)) {
                
$updraftplus->log($dbinfo['user'].'@'.$dbinfo['host'].'/'.$dbinfo['name'].' : database connection attempt failed');
                
$updraftplus->log($dbinfo['user'].'@'.$dbinfo['host'].'/'.$dbinfo['name'].' : '.__('database connection attempt failed.''updraftplus').' '.__('Connection failed: check your access details, that the database server is up, and that the network connection is not firewalled.''updraftplus'), 'error');
                return 
$updraftplus->log_wp_error($this->wpdb_obj->error);
            }
            
$this->table_prefix $dbinfo['prefix'];
            
$this->table_prefix_raw $dbinfo['prefix'];
        }
        
        
$this->dbinfo $dbinfo;

        
do_action('updraftplus_backup_db_begin'$whichdb$dbinfo$already_done$this);

        
UpdraftPlus_Database_Utility::set_sql_mode(array(), array('ANSI_QUOTES'), $this->wpdb_obj);

        
$errors 0;

        
$use_time apply_filters('updraftplus_base_backup_timestamp'$updraftplus->backup_time);
        
$file_base $this->get_backup_file_basename_from_time($use_time);
        
$backup_file_base $this->updraft_dir.'/'.$file_base;

        if (
'finished' == $already_done) return basename($backup_file_base).'-db'.(('wp' == $whichdb) ? '' $whichdb).'.gz';
        if (
'encrypted' == $already_done) return basename($backup_file_base).'-db'.(('wp' == $whichdb) ? '' $whichdb).'.gz.crypt';

        
$updraftplus->jobdata_set('jobstatus''dbcreating'.$this->whichdb_suffix);

        
$binsqldump $updraftplus->find_working_sqldump();

        
$total_tables 0;

        
// WP 3.9 onwards - https://core.trac.wordpress.org/browser/trunk/src/wp-includes/wp-db.php?rev=27925 - check_connection() allows us to get the database connection back if it had dropped
        
if ('wp' == $whichdb && method_exists($this->wpdb_obj'check_connection') && (!defined('UPDRAFTPLUS_SUPPRESS_CONNECTION_CHECKS') || !UPDRAFTPLUS_SUPPRESS_CONNECTION_CHECKS)) {
            if (!
$this->wpdb_obj->check_connection(false)) {
                
UpdraftPlus_Job_Scheduler::reschedule(60);
                
$updraftplus->log("It seems the database went away; scheduling a resumption and terminating for now");
                
UpdraftPlus_Job_Scheduler::record_still_alive();
                die;
            }
        }

        
// SHOW FULL - so that we get to know whether it's a BASE TABLE or a VIEW
        
$all_tables $this->wpdb_obj->get_results("SHOW FULL TABLES"ARRAY_N);
        
        if (empty(
$all_tables) && !empty($this->wpdb_obj->last_error)) {
            
$all_tables $this->wpdb_obj->get_results("SHOW TABLES"ARRAY_N);
            
$all_tables array_map(array($this'cb_get_name_base_type'), $all_tables);
        } else {
            
$all_tables array_map(array($this'cb_get_name_type'), $all_tables);
        }

        
// If this is not the WP database, then we do not consider it a fatal error if there are no tables
        
if ('wp' == $whichdb && == count($all_tables)) {
            
$extra = ($updraftplus->newresumption_scheduled) ? ' - '.__('please wait for the rescheduled attempt''updraftplus') : '';
            
$updraftplus->log("Error: No WordPress database tables found (SHOW TABLES returned nothing)".$extra);
            
$updraftplus->log(__("No database tables found"'updraftplus').$extra'error');
            die;
        }

        
// Put the options table first
        
usort($all_tables, array($this'backup_db_sorttables'));
        
        
$all_table_names array_map(array($this'cb_get_name'), $all_tables);

        if (!
UpdraftPlus_Filesystem_Functions::really_is_writable($this->updraft_dir)) {
            
$updraftplus->log("The backup directory (".$this->updraft_dir.") could not be written to (could be account/disk space full, or wrong permissions).");
            
$updraftplus->log($this->updraft_dir.": ".__('The backup directory is not writable (or disk space is full) - the database backup is expected to shortly fail.''updraftplus'), 'warning');
            
// Why not just fail now? We saw a bizarre case when the results of really_is_writable() changed during the run.
        
}

        
// This check doesn't strictly get all possible duplicates; it's only designed for the case that can happen when moving between deprecated Windows setups and Linux
        
$this->duplicate_tables_exist false;
        foreach (
$all_table_names as $table) {
            if (
strtolower($table) != $table && in_array(strtolower($table), $all_table_names)) {
                
$this->duplicate_tables_exist true;
                
$updraftplus->log("Tables with names differing only based on case-sensitivity exist in the MySQL database: $table / ".strtolower($table));
            }
        }
        
$how_many_tables count($all_tables);

        
$stitch_files = array();
        
$found_options_table false;
        
$is_multisite is_multisite();

        
$anonymisation_options $updraftplus->jobdata_get('anonymisation_options', array());

        if (!empty(
$anonymisation_options)) {
            
$updraftplus->log("Anonymisation options have been set, so mysqldump (which does not support them) will be disabled.");
        }

        
// Gather the list of files that look like partial table files once only
        
$potential_stitch_files = array();
        
$table_file_prefix_base$file_base.'-db'.$this->whichdb_suffix.'-table-';
        if (
false !== ($dir_handle opendir($this->updraft_dir))) {
            while (
false !== ($e readdir($dir_handle))) {
                
// The 'r' in 'tmpr' indicates that the new scheme is being used. N.B. That does *not* imply that the table has a usable primary key.
                
if (!is_file($this->updraft_dir.'/'.$e)) continue;
                if (
preg_match('#'.$table_file_prefix_base.'.*\.table\.tmpr?(\d+)\.gz$#'$e$matches)) {
                    
// We need to stich them in order
                    
$potential_stitch_files[] = $e;
                }
            }
        } else {
            
$updraftplus->log("Error: Failed to open directory for reading");
            
$updraftplus->log(__("Failed to open directory for reading:"'updraftplus').' '.$this->updraft_dir'error');
        }
        
        
$errors_at_all_tables_start $updraftplus->error_count();
        
        foreach (
$all_tables as $ti) {

            
$table $ti['name'];
            
$stitch_files[$table] = array();
            
$table_type $ti['type'];
            
$errors_at_table_start $updraftplus->error_count();
            
            
$manyrows_warning false;
            
$total_tables++;

            
// Increase script execution time-limit to 15 min for every table.
            
@set_time_limit(UPDRAFTPLUS_SET_TIME_LIMIT);// phpcs:ignore Generic.PHP.NoSilencedErrors.Discouraged
            // The table file may already exist if we have produced it on a previous run
            
$table_file_prefix $file_base.'-db'.$this->whichdb_suffix.'-table-'.$table.'.table';

            if (
'wp' == $whichdb && (strtolower($this->table_prefix_raw.'options') == strtolower($table) || ($is_multisite && (strtolower($this->table_prefix_raw.'sitemeta') == strtolower($table) || strtolower($this->table_prefix_raw.'1_options') == strtolower($table))))) $found_options_table true;

            
// Already finished?
            
if (file_exists($this->updraft_dir.'/'.$table_file_prefix.'.gz')) {
                
$stitched count($stitch_filesCOUNT_RECURSIVE);
                
$skip_dblog = (($stitched 10 && != $stitched 20) || ($stitched 100 && != $stitched 100));
                
$updraftplus->log("Table $table: corresponding file already exists; moving on"'notice'false$skip_dblog);
                
                
$max_record false;
                foreach (
$potential_stitch_files as $e) {
                    
// The 'r' in 'tmpr' indicates that the new scheme is being used. N.B. That does *not* imply that the table has a usable primary key.
                    
if (preg_match('#'.$table_file_prefix.'\.tmpr?(\d+)\.gz$#'$e$matches)) {
                        
// We need to stich them in order
                        
$stitch_files[$table][$matches[1]] = $e;
                        if (
false === $max_record || $matches[1] > $max_record$max_record $matches[1];
                    }
                }
                
$stitch_files[$table][$max_record+1] = $table_file_prefix.'.gz';
                
                
// Move on to the next table
                
continue;
            }

            
// === is needed with strpos/stripos, otherwise 'false' matches (i.e. prefix does not match)
            
if (empty($this->table_prefix) || (!$this->duplicate_tables_exist && === stripos($table$this->table_prefix)) || ($this->duplicate_tables_exist && === strpos($table$this->table_prefix))) {

                
// Skip table due to filter?
                
if (!apply_filters('updraftplus_backup_table'true$table$this->table_prefix$whichdb$dbinfo)) {
                    
$updraftplus->log("Skipping table (filtered): $table");
                    if (empty(
$this->skipped_tables)) $this->skipped_tables = array();

                    
// whichdb could be an int in which case to get the name of the database and the array key use the name from dbinfo
                    
$key = ('wp' === $whichdb) ? 'wp' $dbinfo['name'];

                    if (empty(
$this->skipped_tables[$key])) $this->skipped_tables[$key] = array();
                    
$this->skipped_tables[$key][] = $table;

                    
$total_tables--;
                    continue;
                }

                
add_filter('updraftplus_backup_table_sql_where', array($this'backup_exclude_jobdata'), 310);

                
$updraftplus->jobdata_set('dbcreating_substatus', array('t' => $table'i' => $total_tables'a' => $how_many_tables));
                
                
// .tmp.gz is the current temporary file. When the row limit has been reached, it is moved to .tmp1.gz, .tmp2.gz, etc. (depending on which already exist). When we're all done, then they all get stitched in.
                
                
$db_temp_file $this->updraft_dir.'/'.$table_file_prefix.'.tmp.gz';
                
$updraftplus->check_recent_modification($db_temp_file);
            
                
// Open file, store the handle
                
if (false === $this->backup_db_open($db_temp_filetrue)) return false;

                
$table_status $this->wpdb_obj->get_row("SHOW TABLE STATUS WHERE Name='$table'");
                
                
// Create the preceding SQL statements for the table
                
$this->stow("# " sprintf('Table: %s'UpdraftPlus_Manipulation_Functions::backquote($table)) . "\n");
                if (isset(
$table_status->Rows)) {
                    
$rows $table_status->Rows;
                    
$updraftplus->log("Table $table: Total expected rows (approximate): ".$rows);
                    
$this->stow("# Approximate rows expected in table: $rows\n");
                    if (
$rows UPDRAFTPLUS_WARN_DB_ROWS) {
                        
$manyrows_warning true;
                        
$updraftplus->log(sprintf(__("Table %s has very many rows (%s) - we hope your web hosting company gives you enough resources to dump out that table in the backup"'updraftplus'), $table$rows).' '.__('If not, you will need to either remove data from this table, or contact your hosting company to request more resources.''updraftplus'), 'warning''manyrows_'.$this->whichdb_suffix.$table);
                    }
                }

                
// If no check-in last time, then we could in future try the other method (but - any point in retrying slow method on large tables??)

                // New Jul 2014: This attempt to use bindump instead at a lower threshold is quite conservative - only if the last successful run was exactly two resumptions ago - may be useful to expand
                
$bindump_threshold = (!$updraftplus->something_useful_happened && !empty($updraftplus->current_resumption) && (== $updraftplus->current_resumption $updraftplus->last_successful_resumption)) ? 1000 8000;

                
$bindump = (isset($table_status->Rows) && ($table_status->Rows>$bindump_threshold || (defined('UPDRAFTPLUS_ALWAYS_TRY_MYSQLDUMP') && UPDRAFTPLUS_ALWAYS_TRY_MYSQLDUMP)) && is_string($binsqldump) && empty($anonymisation_options)) ? $this->backup_table_bindump($binsqldump$table) : false;
                
                
// Means "start of table". N.B. The meaning of an integer depends upon whether the table has a usable primary key or not.
                
$start_record true;
                
$can_use_primary_key apply_filters('updraftplus_can_use_primary_key_default'true$table);
                foreach (
$potential_stitch_files as $e) {
                    
// The 'r' in 'tmpr' indicates that the new scheme is being used. N.B. That does *not* imply that the table has a usable primary key.
                    
if (preg_match('#'.$table_file_prefix.'\.tmp(r)?(\d+)\.gz$#'$e$matches)) {
                        
$stitch_files[$table][$matches[2]] = $e;
                        if (
true === $start_record || $matches[2] > $start_record$start_record $matches[2];
                        
// Legacy scheme. The purpose of this is to prevent backups failing if one is in progress during an upgrade to a new version that implements the new scheme
                        
if ('r' !== $matches[1]) $can_use_primary_key false;
                    }
                }
                
                
// Legacy file-naming scheme in use
                
if (false === $can_use_primary_key && true !== $start_record) {
                    
$start_record = ($start_record 100) * 1000;
                }
                
                if (
true !== $bindump) {
                
                    while (!
is_array($start_record) && !is_wp_error($start_record)) {
                        
$start_record $this->backup_table($table$table_type$start_record$can_use_primary_key);
                        if (
is_integer($start_record) || is_array($start_record)) {
                        
                            
$this->backup_db_close();
                            
                            
// Add one here in case no records were returned - don't want to over-write the previous file
                            
$use_record is_array($start_record) ? (isset($start_record['next_record']) ? $start_record['next_record']+false) : $start_record;
                            if (!
$can_use_primary_key$use_record = (ceil($use_record/100000)-1) * 100;
                            
                            if (
false !== $use_record) {
                                
// N.B. Renaming using the *next* record is intentional - it allows UD to know where to resume from.
                                
$rename_base $table_file_prefix.'.tmp'.($can_use_primary_key 'r' '').$use_record.'.gz';
                                
                                
rename($db_temp_file$this->updraft_dir.'/'.$rename_base);
                                
$stitch_files[$table][$use_record] = $rename_base;
                            }
                            
                            
UpdraftPlus_Job_Scheduler::something_useful_happened();
                            
                            if (
false === $this->backup_db_open($db_temp_filetrue)) return false;
                            
                        } elseif (
is_wp_error($start_record)) {
                            
$message "Error (table=$table, type=$table_type) (".$start_record->get_error_code()."): ".$start_record->get_error_message();
                            
$updraftplus->log($message);
                            
// If it's a view, then the problem isn't recoverable; but views don't contain actual data except in the definition, which is likely in code, so we should not consider this a fatal error
                            
$level 'error';
                            if (
'view' == strtolower($table_type) && 'table_details_error' == $start_record->get_error_code()) {
                                
$level 'warning';
                                
$this->stow("# $message\n");
                            }
                            
$updraftplus->log(__("Failed to backup database table:"'updraftplus').' '.$start_record->get_error_message().' ('.$start_record->get_error_code().')'$level);
                        }
                            
                    }
                }

                
// If we got this far, then there were enough resources; the warning can be removed
                
if (!empty($manyrows_warning)) $updraftplus->log_remove_warning('manyrows_'.$this->whichdb_suffix.$table);

                
$this->backup_db_close();

                if (
$updraftplus->error_count() > $errors_at_table_start) {
                    
                    
$updraftplus->log('Errors occurred during backing up the table; therefore the open file will be removed');
                    @
unlink($db_temp_file); // phpcs:ignore Generic.PHP.NoSilencedErrors.Discouraged
                    
                
} else {
                
                    
// Renaming the file indicates that writing to it finished
                    
rename($db_temp_file$this->updraft_dir.'/'.$table_file_prefix.'.gz');
                    
UpdraftPlus_Job_Scheduler::something_useful_happened();
                    
                    
$final_stitch_value = empty($stitch_files[$table]) ? max(array_keys($stitch_files[$table])) + 1;
                    
                    
$stitch_files[$table][$final_stitch_value] = $table_file_prefix.'.gz';
                    
                    
$total_db_size 0;
                    
// This is more verbose than it would be if we weren't supporting PHP 5.2
                    
foreach ($stitch_files[$table] as $basename) {
                        
$total_db_size += filesize($this->updraft_dir.'/'.$basename);
                    }
                    
                    
$updraftplus->log("Table $table: finishing file(s) (".count($stitch_files[$table]).', '.round($total_db_size/10241).' KB)''notice'falsefalse);
                }
                
            } else {
                
$total_tables--;
                
$updraftplus->log("Skipping table (lacks our prefix (".$this->table_prefix.")): $table");
                if (empty(
$this->skipped_tables)) $this->skipped_tables = array();
                
// whichdb could be an int in which case to get the name of the database and the array key use the name from dbinfo
                
$key = ('wp' === $whichdb) ? 'wp' $dbinfo['name'];
                if (empty(
$this->skipped_tables[$key])) $this->skipped_tables[$key] = array();
                
$this->skipped_tables[$key][] = $table;
            }
        }

        if (
'wp' == $whichdb) {
            if (!
$found_options_table) {
                if (
$is_multisite) {
                    
$updraftplus->log(__('The database backup appears to have failed''updraftplus').' - '.__('no options or sitemeta table was found''updraftplus'), 'warning''optstablenotfound');
                } else {
                    
$updraftplus->log(__('The database backup appears to have failed''updraftplus').' - '.__('the options table was not found''updraftplus'), 'warning''optstablenotfound');
                }
                
$time_this_run time()-$updraftplus->opened_log_time;
                if (
$time_this_run 2000) {
                    
// Have seen this happen; not sure how, but it was apparently deterministic; if the current process had been running for a long time, then apparently all database commands silently failed.
                    // If we have been running that long, then the resumption may be far off; bring it closer
                    
UpdraftPlus_Job_Scheduler::reschedule(60);
                    
$updraftplus->log("Have been running very long, and it seems the database went away; scheduling a resumption and terminating for now");
                    
UpdraftPlus_Job_Scheduler::record_still_alive();
                    die;
                }
            } else {
                
$updraftplus->log_remove_warning('optstablenotfound');
            }
        }

        if (
$updraftplus->error_count() > $errors_at_all_tables_start) {
            
$updraftplus->log('Errors occurred whilst backing up the tables; will cease and wait for resumption');
            die;
        }
        
        
// Race detection - with zip files now being resumable, these can more easily occur, with two running side-by-side
        
$backup_final_file_name $backup_file_base.'-db'.$this->whichdb_suffix.'.gz';
        
$time_now time();
        
$time_mod = (int) @filemtime($backup_final_file_name);// phpcs:ignore Generic.PHP.NoSilencedErrors.Discouraged
        
if (file_exists($backup_final_file_name) && $time_mod>100 && ($time_now-$time_mod)<30) {
            
UpdraftPlus_Job_Scheduler::terminate_due_to_activity($backup_final_file_name$time_now$time_mod);
        }
        
        if (
file_exists($backup_final_file_name)) {
            
$updraftplus->log("The final database file ($backup_final_file_name) exists, but was apparently not modified within the last 30 seconds (time_mod=$time_mod, time_now=$time_now, diff=".($time_now-$time_mod)."). Thus we assume that another UpdraftPlus terminated; thus we will continue.");
        }

        
// Finally, stitch the files together
        
if (!function_exists('gzopen')) {
            
$updraftplus->log("PHP function is disabled; abort expected: gzopen()");
        }

        if (
false === $this->backup_db_open($backup_final_file_nametrue)) return false;

        
$this->backup_db_header();

        
// We delay the unlinking because if two runs go concurrently and fail to detect each other (should not happen, but there's no harm in assuming the detection failed) then that would lead to files missing from the db dump
        
$unlink_files = array();

        
$sind 1;
        
        foreach (
$stitch_files as $table => $table_stitch_files) {
            
ksort($table_stitch_files);
            foreach (
$table_stitch_files as $table_file) {
                
$updraftplus->log("{$table_file} ($sind/$how_many_tables): adding to final database dump");
                if (!
$handle gzopen($this->updraft_dir.'/'.$table_file"r")) {
                    
$updraftplus->log("Error: Failed to open database file for reading: ${table_file}.gz");
                    
$updraftplus->log(__("Failed to open database file for reading:"'updraftplus').' '.$table_file'error');
                    
$errors++;
                } else {
                    while (
$line gzgets($handle65536)) {
                        
$this->stow($line);
                    }
                    
gzclose($handle);
                    
$unlink_files[] = $this->updraft_dir.'/'.$table_file;
                }
                
$sind++;
                
// Came across a database with 7600 tables... adding them all took over 500 seconds; and so when the resumption started up, no activity was detected
                
if (== $sind 100UpdraftPlus_Job_Scheduler::something_useful_happened();
            }
        }

        
// DB triggers
        
if ($this->wpdb_obj->get_results("SHOW TRIGGERS")) {
            
// N.B. DELIMITER is not a valid SQL command; you cannot pass it to the server. It has to be interpreted by the interpreter - e.g. /usr/bin/mysql, or UpdraftPlus, and used to interpret what follows. The effect of this is that using it means that some SQL clients will stumble; but, on the other hand, failure to use it means that others that don't have special support for CREATE TRIGGER may stumble, because they may feed incomplete statements to the SQL server. Since /usr/bin/mysql uses it, we choose to support it too (both reading and writing).
            // Whatever the delimiter is set to needs to be used in the DROP TRIGGER and CREATE TRIGGER commands in this section further down.
            
$this->stow("DELIMITER ;;\n\n");
            foreach (
$all_tables as $ti) {
                
$table $ti['name'];
                if (!empty(
$this->skipped_tables)) {
                    if (
'wp' == $this->whichdb) {
                        if (
in_array($table$this->skipped_tables['wp'])) continue;
                    } elseif (isset(
$this->skipped_tables[$this->dbinfo['name']])) {
                        if (
in_array($table$this->skipped_tables[$this->dbinfo['name']])) continue;
                    }
                }
                
$table_triggers $this->wpdb_obj->get_results($wpdb->prepare("SHOW TRIGGERS LIKE %s"$table), ARRAY_A);
                if (
$table_triggers) {
                    
$this->stow("\n\n# Triggers of  ".UpdraftPlus_Manipulation_Functions::backquote($table)."\n\n");
                    foreach (
$table_triggers as $trigger) {
                        
$trigger_name $trigger['Trigger'];
                        
$trigger_time $trigger['Timing'];
                        
$trigger_event $trigger['Event'];
                        
$trigger_statement $trigger['Statement'];
                        
// Since trigger name can include backquotes and trigger name is typically enclosed with backquotes as well, the backquote escaping for the trigger name can be done by adding a leading backquote
                        
$quoted_escaped_trigger_name UpdraftPlus_Manipulation_Functions::backquote(str_replace('`''``'$trigger_name));
                        
$this->stow("DROP TRIGGER IF EXISTS $quoted_escaped_trigger_name;;\n");
                        
$trigger_query "CREATE TRIGGER $quoted_escaped_trigger_name $trigger_time $trigger_event ON ".UpdraftPlus_Manipulation_Functions::backquote($table)." FOR EACH ROW $trigger_statement;;";
                        
$this->stow("$trigger_query\n\n");
                    }
                }
            }
            
$this->stow("DELIMITER ;\n\n");
        }

        
// DB Stored Routines
        
$stored_routines UpdraftPlus_Database_Utility::get_stored_routines();
        if (
is_array($stored_routines) && !empty($stored_routines)) {
            
$updraftplus->log("Dumping routines for database {$this->dbinfo['name']}");
            
$this->stow("\n\n# Dumping routines for database ".UpdraftPlus_Manipulation_Functions::backquote($this->dbinfo['name'])."\n\n");
            
$this->stow("DELIMITER ;;\n\n");
            foreach (
$stored_routines as $routine) {
                
$routine_name $routine['Name'];
                
// Since routine name can include backquotes and routine name is typically enclosed with backquotes as well, the backquote escaping for the routine name can be done by adding a leading backquote
                
$quoted_escaped_routine_name UpdraftPlus_Manipulation_Functions::backquote(str_replace('`''``'$routine_name));
                
$this->stow("DROP {$routine['Type']} IF EXISTS $quoted_escaped_routine_name;;\n\n");
                
$this->stow($routine['Create '.ucfirst(strtolower($routine['Type']))]."\n\n;;\n\n");
                
$updraftplus->log("Dumping routine: {$routine['Name']}");
            }
            
$this->stow("DELIMITER ;\n\n");
        } elseif (
is_wp_error($stored_routines)) {
            
$updraftplus->log($stored_routines->get_error_message());
        }

        
$this->stow("/*!40101 SET CHARACTER_SET_CLIENT=@OLD_CHARACTER_SET_CLIENT */;\n/*!40101 SET CHARACTER_SET_RESULTS=@OLD_CHARACTER_SET_RESULTS */;\n/*!40101 SET COLLATION_CONNECTION=@OLD_COLLATION_CONNECTION */;\n");

        
$updraftplus->log($file_base.'-db'.$this->whichdb_suffix.'.gz: finished writing out complete database file ('.round(filesize($backup_final_file_name)/10241).' KB)');
        if (!
$this->backup_db_close()) {
            
$updraftplus->log('An error occurred whilst closing the final database file');
            
$updraftplus->log(__('An error occurred whilst closing the final database file''updraftplus'), 'error');
            
$errors++;
        }

        foreach (
$unlink_files as $unlink_file) {
            @
unlink($unlink_file);// phpcs:ignore Generic.PHP.NoSilencedErrors.Discouraged
        
}

        if (
$errors 0) return false;
        
        
// We no longer encrypt here - because the operation can take long, we made it resumable and moved it to the upload loop
        
$updraftplus->jobdata_set('jobstatus''dbcreated'.$this->whichdb_suffix);
        
        
$checksums $updraftplus->which_checksums();
        
        
$checksum_description '';
        
        foreach (
$checksums as $checksum) {
        
            
$cksum hash_file($checksum$backup_final_file_name);
            
$updraftplus->jobdata_set($checksum.'-db'.(('wp' == $whichdb) ? '0' $whichdb.'0'), $cksum);
            if (
$checksum_description$checksum_description .= ', ';
            
$checksum_description .= "$checksum$cksum";
        
        }
        
        
$updraftplus->log("Total database tables backed up: $total_tables (".basename($backup_final_file_name).", size: ".filesize($backup_final_file_name).", $checksum_description)");
        
        return 
basename($backup_final_file_name);

    }

    
/**
     * This function will return a SQL WHERE clause to exclude updraft jobdata
     *
     * @param array  $where - an array of where clauses to add to
     * @param string $table - the table we want to add a where clause for
     *
     * @return array - returns an array of where clauses for the table
     */
    
public function backup_exclude_jobdata($where$table) {
        
// Don't include the job data for any backups - so that when the database is restored, it doesn't continue an apparently incomplete backup
        
if ('wp' == $this->whichdb && (!empty($this->table_prefix) && strtolower($this->table_prefix.'sitemeta') == strtolower($table))) {
            
$where[] = 'meta_key NOT LIKE "updraft_jobdata_%"';
        } elseif (
'wp' == $this->whichdb && (!empty($this->table_prefix) && strtolower($this->table_prefix.'options') == strtolower($table))) {
            
// These might look similar, but the quotes are different
            
if ('win' == strtolower(substr(PHP_OS03))) {
                
$updraft_jobdata "'updraft_jobdata_%'";
                
$site_transient_update "'_site_transient_update_%'";
            } else {
                
$updraft_jobdata '"updraft_jobdata_%"';
                
$site_transient_update '"_site_transient_update_%"';
            }
            
            
$where[] = 'option_name NOT LIKE '.$updraft_jobdata.' AND option_name NOT LIKE '.$site_transient_update.'';
        }

        return 
$where;
    }

    
/**
     * Produce a dump of the table using a mysqldump binary
     *
     * @param String $potsql     - the path to the mysqldump binary
     * @param String $table_name - the name of the table being dumped
     *
     * @return Boolean - success status
     */
    
private function backup_table_bindump($potsql$table_name) {

        
$microtime microtime(true);

        global 
$updraftplus;

        
// Deal with Windows/old MySQL setups with erroneous table prefixes differing in case
        // Can't get binary mysqldump to make this transformation
        // $dump_as_table = ($this->duplicate_tables_exist == false && stripos($table, $this->table_prefix) === 0 && strpos($table, $this->table_prefix) !== 0) ? $this->table_prefix.substr($table, strlen($this->table_prefix)) : $table;

        
$pfile md5(time().rand()).'.tmp';
        
file_put_contents($this->updraft_dir.'/'.$pfile"[mysqldump]\npassword=".$this->dbinfo['pass']."\n");

        
$where_array apply_filters('updraftplus_backup_table_sql_where', array(), $table_name$this);
        
$where '';
        
        if (!empty(
$where_array) && is_array($where_array)) {
            
// N.B. Don't add a WHERE prefix here; most versions of mysqldump silently strip it out, but one was encountered that didn't.
            
$first_loop true;
            foreach (
$where_array as $condition) {
                if (!
$first_loop$where .= " AND ";
                
$where .= $condition;
                
$first_loop false;
            }
        }

        
// Note: escapeshellarg() adds quotes around the string
        
if ($where$where "--where=".escapeshellarg($where);

        if (
strtolower(substr(PHP_OS03)) == 'win') {
            
$exec "cd ".escapeshellarg(str_replace('/''\\'$this->updraft_dir))." & ";
        } else {
            
$exec "cd ".escapeshellarg($this->updraft_dir)."; ";
        }

        
// Allow --max_allowed_packet to be configured via constant. Experience has shown some customers with complex CMS or pagebuilder setups can have extrememly large postmeta entries.
        
$msqld_max_allowed_packet = (defined('UPDRAFTPLUS_MYSQLDUMP_MAX_ALLOWED_PACKET') && (is_int(UPDRAFTPLUS_MYSQLDUMP_MAX_ALLOWED_PACKET) || is_string(UPDRAFTPLUS_MYSQLDUMP_MAX_ALLOWED_PACKET))) ? UPDRAFTPLUS_MYSQLDUMP_MAX_ALLOWED_PACKET '1M';

        
$exec .= "$potsql --defaults-file=$pfile $where --max_allowed_packet=$msqld_max_allowed_packet --quote-names --add-drop-table --skip-comments --skip-set-charset --allow-keywords --dump-date --extended-insert --user=".escapeshellarg($this->dbinfo['user'])." --host=".escapeshellarg($this->dbinfo['host'])." ".$this->dbinfo['name']." ".escapeshellarg($table_name);
        
        
$ret false;
        
$any_output false;
        
$writes 0;
        
$handle popen($exec"r");
        if (
$handle) {
            while (!
feof($handle)) {
                
$w fgets($handle);
                if (
$w) {
                    
$this->stow($w);
                    
$writes++;
                    
$any_output true;
                }
            }
            
$ret pclose($handle);
            if (
!= $ret) {
                
$updraftplus->log("Binary mysqldump: error (code: $ret)");
                
// Keep counter of failures? Change value of binsqldump?
            
} else {
                if (
$any_output) {
                    
$updraftplus->log("Table $table_name: binary mysqldump finished (writes: $writes) in ".sprintf("%.02f"max(microtime(true)-$microtime0.00001))." seconds");
                    
$ret true;
                }
            }
        } else {
            
$updraftplus->log("Binary mysqldump error: bindump popen failed");
        }

        
// Clean temporary files
        
@unlink($this->updraft_dir.'/'.$pfile);// phpcs:ignore Generic.PHP.NoSilencedErrors.Discouraged

        
return $ret;

    }

    
/**
     * Write out the initial backup information for a table to the currently open file
     *
     * @param String $table              - Full name of database table to backup
     * @param String $dump_as_table      - Table name to use when writing out
     * @param String $table_type      - Table type - 'VIEW' is supported; otherwise it is treated as an ordinary table
     * @param Array  $table_structure - Table structure as returned by a DESCRIBE command
     */
    
private function write_table_backup_beginning($table$dump_as_table$table_type$table_structure) {
    
        
$this->stow("\n# Delete any existing table ".UpdraftPlus_Manipulation_Functions::backquote($table)."\n\nDROP TABLE IF EXISTS " UpdraftPlus_Manipulation_Functions::backquote($dump_as_table).";\n");
        
        if (
'VIEW' == $table_type) {
            
$this->stow("DROP VIEW IF EXISTS " UpdraftPlus_Manipulation_Functions::backquote($dump_as_table) . ";\n");
        }
        
        
$description = ('VIEW' == $table_type) ? 'view' 'table';
        
        
$this->stow("\n# Table structure of $description ".UpdraftPlus_Manipulation_Functions::backquote($table)."\n\n");
        
        
$create_table $this->wpdb_obj->get_results("SHOW CREATE TABLE ".UpdraftPlus_Manipulation_Functions::backquote($table), ARRAY_N);
        if (
false === $create_table) {
            
$this->stow("#\n# Error with SHOW CREATE TABLE for $table\n#\n");
        }
        
$create_line UpdraftPlus_Manipulation_Functions::str_lreplace('TYPE=''ENGINE='$create_table[0][1]);

        
// Remove PAGE_CHECKSUM parameter from MyISAM - was internal, undocumented, later removed (so causes errors on import)
        
if (preg_match('/ENGINE=([^\s;]+)/'$create_line$eng_match)) {
            
$engine $eng_match[1];
            if (
'myisam' == strtolower($engine)) {
                
$create_line preg_replace('/PAGE_CHECKSUM=\d\s?/'''$create_line1);
            }
        }

        if (
$dump_as_table !== $table$create_line UpdraftPlus_Manipulation_Functions::str_replace_once($table$dump_as_table$create_line);

        
$this->stow($create_line.' ;');
        
        if (
false === $table_structure) {
            
$this->stow("#\n# Error getting $description structure of $table\n#\n");
        }

        
// Add a comment preceding the beginning of the data
        
$this->stow("\n\n# ".sprintf("Data contents of $description %s"UpdraftPlus_Manipulation_Functions::backquote($table))."\n\n");

    }
    
    
/**
     * Suggest a beginning value for how many rows to fetch in each SELECT statement (before taking into account resumptions)
     *
     * @param String $table
     *
     * @return Integer
     */
    
private function get_rows_on_first_fetch($table) {

        
// In future, we could run over the table definition; if it is all non-massive defined lengths, we could base a calculation on that.
    
        
if ($this->table_prefix_raw.'term_relationships' == $table) {
            
// This table is known to have very small data lengths
            
$rows 100000;
        } else {
            
$rows 1000;
        }
    
        return 
$rows;
    
    }
    
    
/**
     * Suggest how many rows to fetch in each SELECT statement
     *
     * @param String  $table                    - the table being fetched
     * @param Boolean $allow_further_reductions - whether to enable a second level of reductions
     * @param Boolean $is_first_fetch_for_table - whether this is the first fetch on this table
     *
     * @return Integer
     */
    
private function number_of_rows_to_fetch($table$allow_further_reductions$is_first_fetch_for_table) {
            
        global 
$updraftplus;
        
        
$default_on_first_fetch $this->get_rows_on_first_fetch($table);
        
        
// If this is not the first fetch on a table, then get what was stored last time we set it (if we ever did). On the first fetch, reset back to the starting value (we presume problems are table-specific).
        // This means that the same value will persist whilst the table is being backed up, both during the current resumption, and subsequent ones
        
$fetch_rows $is_first_fetch_for_table $default_on_first_fetch $updraftplus->jobdata_get('fetch_rows'$default_on_first_fetch);
        
        
$fetch_rows_at_start $fetch_rows;
        
        
$resumptions_since_last_successful $updraftplus->current_resumption $updraftplus->last_successful_resumption;
        
        
// Do we need to reduce the number of rows we attempt to fetch?
        // If something useful has happened on this run, then we don't try any reductions (we save them for a resumption after one on which nothing useful happened)
        
if (!$updraftplus->something_useful_happened && !empty($updraftplus->current_resumption) && $resumptions_since_last_successful 1) {
            
// This used to be fixed at 500; but we (after a long time) saw a case that looked like an out-of-memory even at this level. Now that we have implemented resumptions, the risk of timeouts is much lower (we just need to process enough rows).
            // October 2020: added further reductions
            // Listed in increasing order due to the handling below. At the end it gets quite drastic. Note, though, that currently we don't store this in the job-data.
            // A future improvement could, when things get drastic, grab and log data on the size of what is required, so that we can respond more dynamically. The strategy currently here will run out of road if memory falls short multiple times. See: https://stackoverflow.com/questions/4524019/how-to-get-the-byte-size-of-resultset-in-an-sql-query
            
$fetch_rows_reductions = array(500250200100);
            
            if (
$allow_further_reductions) {
                
// If we're relying on LIMIT with offsets, then we have to be mindful of how that performs
                
$fetch_rows_reductions array_merge($fetch_rows_reductions, array(50205));
            }
            
            
$break_after $is_first_fetch_for_table $resumptions_since_last_successful 1;
            
            foreach (
$fetch_rows_reductions as $reduce_to) {
                if (
$fetch_rows $reduce_to) {
                    
// Go down one level
                    
$fetch_rows $reduce_to;
                    
$break_after--;
                    if (
$break_after 1) break;
                }
            }
            
            
$updraftplus->log("Last successful resumption was $resumptions_since_last_successful runs ago; fetch_rows will thus be: $fetch_rows (allow_further_reductions=$allow_further_reductions, is_first_fetch=$is_first_fetch_for_table)");
        }
        
        
// If it has changed, then preserve it in the job for the next resumption (of this table)
        
if ($fetch_rows_at_start !== $fetch_rows || $is_first_fetch_for_table$updraftplus->jobdata_set('fetch_rows'$fetch_rows);
        
        return 
$fetch_rows;
    
    }
    
    
/**
     * Original version taken partially from phpMyAdmin and partially from Alain Wolf, Zurich - Switzerland to use the WordPress $wpdb object
     * Website: http://restkultur.ch/personal/wolf/scripts/db_backup/
     * Modified by Scott Merrill (http://www.skippy.net/)
     * Subsequently heavily improved and modified
     *
     * This method should be called in a loop for a complete table backup (see the information for the returned parameter). The method may implement whatever strategy it likes for deciding when to return (the assumption is that when it does return with some results, the caller should register that something useful happened).
     *
     * @param String          $table               - Full name of database table to backup
     * @param String          $table_type           - Table type - 'VIEW' is supported; otherwise it is treated as an ordinary table
     * @param Integer|Boolean $start_record           - Specify the starting record, or true to start at the beginning. Our internal page size is fixed at 1000 (though within that we might actually query in smaller batches).
     * @param Boolean          $can_use_primary_key - Whether it is allowed to perform quicker SELECTS based on the primary key. The intended use case for false is to support backups running during a version upgrade. N.B. This "can" is not absolute; there may be other constraints dealt with within this method.
     *
     * @return Integer|Array|WP_Error - a WP_Error to indicate an error; an array indicates that it finished (if it includes 'next_record' that means it finished via producing something); an integer to indicate the next page the case that there are more to do.
     */
    
private function backup_table($table$table_type 'BASE TABLE'$start_record true$can_use_primary_key true) {
        
$process_pages 100;
        
        
// Preserve the passed-in value
        
$original_start_record $start_record;
    
        global 
$updraftplus;

        
$microtime microtime(true);
        
$total_rows 0;

        
// Deal with Windows/old MySQL setups with erroneous table prefixes differing in case
        
$dump_as_table = (false == $this->duplicate_tables_exist && === stripos($table$this->table_prefix) && !== strpos($table$this->table_prefix)) ? $this->table_prefix.substr($tablestrlen($this->table_prefix)) : $table;

        
$table_structure $this->wpdb_obj->get_results("DESCRIBE ".UpdraftPlus_Manipulation_Functions::backquote($table));
        if (!
$table_structure) {
            
// $updraftplus->log(__('Error getting table details', 'updraftplus') . ": $table", 'error');
            
$error_message '';
            if (
$this->wpdb_obj->last_error$error_message .= ' ('.$this->wpdb_obj->last_error.')';
            return new 
WP_Error('table_details_error'$error_message);
        }
    
        
// If at the beginning of the dump for a table, then add the DROP and CREATE statements
        
if (true === $start_record) {
            
$this->write_table_backup_beginning($table$dump_as_table$table_type$table_structure);
        }

        
// Some tables have optional data, and should be skipped if they do not work
        
$table_sans_prefix substr($tablestrlen($this->table_prefix_raw));
        
$data_optional_tables = ('wp' == $this->whichdb) ? apply_filters('updraftplus_data_optional_tables'explode(','UPDRAFTPLUS_DATA_OPTIONAL_TABLES)) : array();
        if (
in_array($table_sans_prefix$data_optional_tables)) {
            if (!
$updraftplus->something_useful_happened && !empty($updraftplus->current_resumption) && ($updraftplus->current_resumption $updraftplus->last_successful_resumption 2)) {
                
$updraftplus->log("Table $table: Data skipped (previous attempts failed, and table is marked as non-essential)");
                return array();
            }
        }

        
$table_data = array();
        if (
'VIEW' != $table_type) {
            
$fields = array();
            
$defs = array();
            
$integer_fields = array();
            
$binary_fields = array();
            
$bit_fields = array();
            
$bit_field_exists false;

            
// false means "not yet set"; a string means what it was set to; null means that there are multiple (and so not useful to us). If it is not a string, then $primary_key_type is invalid and should not be used.
            
$primary_key false;
            
$primary_key_type false;
            
            
// $table_structure was from "DESCRIBE $table"
            
foreach ($table_structure as $struct) {
            
                if (isset(
$struct->Key) && 'PRI' == $struct->Key && '' != $struct->Field) {
                    
$primary_key = (false === $primary_key) ? $struct->Field null;
                    
$primary_key_type $struct->Type;
                }
            
                if ((
=== strpos($struct->Type'tinyint')) || (=== strpos(strtolower($struct->Type), 'smallint'))
                    || (
=== strpos(strtolower($struct->Type), 'mediumint')) || (=== strpos(strtolower($struct->Type), 'int')) || (=== strpos(strtolower($struct->Type), 'bigint'))
                ) {
                        
$defs[strtolower($struct->Field)] = (null === $struct->Default) ? 'NULL' $struct->Default;
                        
$integer_fields[strtolower($struct->Field)] = true;
                }
                
                if ((
=== strpos(strtolower($struct->Type), 'binary')) || (=== strpos(strtolower($struct->Type), 'varbinary')) || (=== strpos(strtolower($struct->Type), 'tinyblob')) || (=== strpos(strtolower($struct->Type), 'mediumblob')) || (=== strpos(strtolower($struct->Type), 'blob')) || (=== strpos(strtolower($struct->Type), 'longblob'))) {
                    
$binary_fields[strtolower($struct->Field)] = true;
                }
                
                if (
preg_match('/^bit(?:\(([0-9]+)\))?$/i'trim($struct->Type), $matches)) {
                    if (!
$bit_field_exists$bit_field_exists true;
                    
$bit_fields[strtolower($struct->Field)] = !empty($matches[1]) ? max(1, (int) $matches[1]) : 1;
                    
// the reason why if bit fields are found then the fields need to be cast into binary type is that if mysqli_query function is being used, mysql will convert the bit field value to a decimal number and represent it in a string format whereas, if mysql_query function is being used, mysql will not convert it to a decimal number but instead will keep it retained as it is
                    
$struct->Field "CAST(".UpdraftPlus_Manipulation_Functions::backquote(str_replace('`''``'$struct->Field))." AS BINARY) AS ".UpdraftPlus_Manipulation_Functions::backquote(str_replace('`''``'$struct->Field));
                    
$fields[] = $struct->Field;
                } else {
                    
$fields[] = UpdraftPlus_Manipulation_Functions::backquote(str_replace('`''``'$struct->Field));
                }
            }
            
            
// N.B. At this stage this is for optimisation, mainly targets what is used on the core WP tables (bigint(20)); a value can be relied upon, but false is not definitive
            
$use_primary_key false;
            if (
$can_use_primary_key && is_string($primary_key) && preg_match('#^(small|medium|big)?int\(#i'$primary_key_type)) {
                
$use_primary_key true;
                if (
preg_match('# unsigned$#i'$primary_key_type)) {
                    if (
true === $start_record$start_record = -1;
                } else {
                    if (
true === $start_record) {
                        
$min_value $this->wpdb_obj->get_var('SELECT MIN('.UpdraftPlus_Manipulation_Functions::backquote($primary_key).') FROM '.UpdraftPlus_Manipulation_Functions::backquote($table));
                        
$start_record = (is_numeric($min_value) && $min_value) ? (int) $min_value : -1;
                    }
                }
            }
            
$search = array("\x00""\x0a""\x0d""\x1a");
            
$replace = array('\0''\n''\r''\Z');

            
$where_array apply_filters('updraftplus_backup_table_sql_where', array(), $table$this);
            
$where '';
            if (!empty(
$where_array) && is_array($where_array)) {
                
$where 'WHERE '.implode(' AND '$where_array);
            }
            
            
// Experimentation here shows that on large tables (we tested with 180,000 rows) on MyISAM, 1000 makes the table dump out 3x faster than the previous value of 100. After that, the benefit diminishes (increasing to 4000 only saved another 12%)

            
$fetch_rows $this->number_of_rows_to_fetch($table$use_primary_key || $start_record 500000true === $original_start_record);
        
            
$select $bit_field_exists implode(', '$fields) : '*';
            
            
$enough_for_now false;
            
            
$began_writing_at time();
            
            
$enough_data_after 104857600;
            
$enough_time_after = ($fetch_rows 250) ? 15 9;
            
            
// Loop which retrieves data
            
do {

                @
set_time_limit(UPDRAFTPLUS_SET_TIME_LIMIT);// phpcs:ignore Generic.PHP.NoSilencedErrors.Discouraged

                // Reset back to that which has constructed before the loop began
                
$final_where $where;
                
                if (
$use_primary_key) {
                
                    
// The point of this is to leverage the indexing on the private key to make the SELECT much faster than index-less paging
                    
$final_where $where . ($where ' AND ' 'WHERE ');
                
                    
// If it's -1, then we avoid mentioning a negative value, as the value may be unsigned
                    
$final_where .= UpdraftPlus_Manipulation_Functions::backquote($primary_key).((-=== $start_record) ? ' >= 0' " > $start_record");
                
                    
$limit_statement sprintf('LIMIT %d'$fetch_rows);
                    
                    
$order_by 'ORDER BY '.UpdraftPlus_Manipulation_Functions::backquote($primary_key).' ASC';
                
                } else {
                    
$order_by '';
                    if (
true === $start_record$start_record 0;
                    
$limit_statement sprintf('LIMIT %d, %d'$start_record$fetch_rows);
                }
                
                
// $this->wpdb_obj->prepare() not needed (will throw a notice) as there are no parameters
                
                
$select_sql "SELECT $select FROM ".UpdraftPlus_Manipulation_Functions::backquote($table).$final_where $order_by $limit_statement";

                
// Allow the data to be filtered (e.g. anonymisation)
                
$table_data apply_filters('updraftplus_backup_table_results'$this->wpdb_obj->get_results($select_sqlARRAY_A), $table$this->table_prefix$this->whichdb);
                
                if (!
$table_data) continue;
                
$entries 'INSERT INTO '.UpdraftPlus_Manipulation_Functions::backquote($dump_as_table).' VALUES ';

                
// \x08\\x09, not required
                
                
$thisentry '';
                foreach (
$table_data as $row) {
                    
$total_rows++;
                    if (
$thisentry$thisentry .= ",\n ";
                    
$thisentry .= '(';
                    
$key_count 0;
                    foreach (
$row as $key => $value) {
                    
                        if (
$key_count$thisentry .= ', ';
                        
$key_count++;
                    
                        if (
$use_primary_key && strtolower($primary_key) == strtolower($key) && $value $start_record) {
                            
$start_record $value;
                        }
                    
                        if (isset(
$integer_fields[strtolower($key)])) {
                            
// make sure there are no blank spots in the insert syntax,
                            // yet try to avoid quotation marks around integers
                            
$value = (null === $value || '' === $value) ? $defs[strtolower($key)] : $value;
                            
$value = ('' === $value) ? "''" $value;
                            
$thisentry .= $value;
                        } elseif (isset(
$binary_fields[strtolower($key)])) {
                            if (
null === $value) {
                                
$thisentry .= 'NULL';
                            } elseif (
'' === $value) {
                                
$thisentry .= "''";
                            } else {
                                
$thisentry .= "0x" bin2hex(str_repeat("0"floor(strspn($value"0") / 4)).$value);
                            }
                        } elseif (isset(
$bit_fields[$key])) {
                            
mbstring_binary_safe_encoding();
                            
$val_len strlen($value);
                            
reset_mbstring_encoding();
                            
$hex '';
                            for (
$i=0$i<$val_len$i++) {
                                
$hex .= sprintf('%02X'ord($value[$i]));
                            }
                            
$thisentry .= "b'".str_pad($this->hex2bin($hex), $bit_fields[$key], '0'STR_PAD_LEFT)."'";
                        } else {
                            
$thisentry .= (null === $value) ? 'NULL' "'" str_replace($search$replacestr_replace('\'''\\\''str_replace('\\''\\\\'$value))) . "'";
                        }
                    }
                    
$thisentry .= ')';
                    
                    
// Flush every 512KB
                    
if (strlen($thisentry) > 524288) {
                        
$thisentry .= ';';
                        if (
strlen($thisentry) > 10485760) {
                            
// This is an attempt to prevent avoidable duplication of long strings in-memory, at the cost of one extra write
                            
$this->stow(" \n".$entries);
                            
$this->stow($thisentry);
                        } else {
                            
$this->stow(" \n".$entries.$thisentry);
                        }
                        
$thisentry '';
                        
// Potentially indicate that enough has been done to loop
                        
if ($this->db_current_raw_bytes $enough_data_after || time() - $began_writing_at $enough_time_after) {
                            
$enough_for_now true;
                        }
                    }
                    
                }
                if (
$thisentry) {
                    
$thisentry .= ';';
                    if (
strlen($thisentry) > 10485760) {
                        
// This is an attempt to prevent avoidable duplication of long strings in-memory, at the cost of one extra write
                        
$this->stow(" \n".$entries);
                        
$this->stow($thisentry);
                    } else {
                        
$this->stow(" \n".$entries.$thisentry);
                    }
                }
                
                if (!
$use_primary_key) {
                    
$start_record += $fetch_rows;
                }
                
                if (
$process_pages 0$process_pages--;
                
            } while (!
$enough_for_now && count($table_data) > && (-== $process_pages || $process_pages 0));
        }
        
        
$updraftplus->log("Table $table: Rows added in this batch (next record: $start_record): $total_rows (uncompressed bytes in this segment=".$this->db_current_raw_bytes.") in ".sprintf("%.02f"max(microtime(true)-$microtime0.00001))." seconds");

        
// If all data has been fetched, then write out the closing comment
        
if (-== $process_pages || == count($table_data)) {
            
$this->stow("\n# End of data contents of table ".UpdraftPlus_Manipulation_Functions::backquote($table)."\n\n");
            return 
is_numeric($start_record) ? array('next_record' => (int) $start_record) : array();
        }

        return 
is_numeric($start_record) ? (int) $start_record $start_record;
        
    }

    
/**
     * Convert hexadecimal (base16) number into binary (base2) and no need to worry about the platform-dependent of 32bit/64bit size limitation
     *
     * @param String $hex Hexadecimal number
     * @return String a base2 format of the given hexadecimal number
     */
    
public function hex2bin($hex) {
        
$table = array(
            
'0' => '0000',
            
'1' => '0001',
            
'2' => '0010',
            
'3' => '0011',
            
'4' => '0100',
            
'5' => '0101',
            
'6' => '0110',
            
'7' => '0111',
            
'8' => '1000',
            
'9' => '1001',
            
'a' => '1010',
            
'b' => '1011',
            
'c' => '1100',
            
'd' => '1101',
            
'e' => '1110',
            
'f' => '1111'
        
);
        
$bin '';

        if (!
preg_match('/^[0-9a-f]+$/i'$hex)) return '';

        for (
$i 0$i strlen($hex); $i++) {
            
$bin .= $table[strtolower(substr($hex$i1))];
        }

        return 
$bin;
    }

    
/**
     * Encrypts the file if the option is set; returns the basename of the file (according to whether it was encrypted or nto)
     *
     * @param String $file - file to encrypt
     *
     * @return array
     */
    
public function encrypt_file($file) {
        global 
$updraftplus;
        
$encryption $updraftplus->get_job_option('updraft_encryptionphrase');
        if (
strlen($encryption) > 0) {
            
$updraftplus->log("Attempting to encrypt backup file");
            try {
                
$result apply_filters('updraft_encrypt_file'null$file$encryption$this->whichdb$this->whichdb_suffix);
            } catch (
Exception $e) {
                
$log_message 'Exception ('.get_class($e).') occurred during encryption: '.$e->getMessage().' (Code: '.$e->getCode().', line '.$e->getLine().' in '.$e->getFile().')';
                
error_log($log_message);
                
// @codingStandardsIgnoreLine
                
if (function_exists('wp_debug_backtrace_summary')) $log_message .= ' Backtrace: '.wp_debug_backtrace_summary();
                
$updraftplus->log($log_message);
                
$updraftplus->log(sprintf(__('A PHP exception (%s) has occurred: %s''updraftplus'), get_class($e), $e->getMessage()), 'error');
                die();
            
// @codingStandardsIgnoreLine
            
} catch (Error $e) {
                
$log_message 'PHP Fatal error ('.get_class($e).') has occurred during encryption. Error Message: '.$e->getMessage().' (Code: '.$e->getCode().', line '.$e->getLine().' in '.$e->getFile().')';
                
error_log($log_message);
                
// @codingStandardsIgnoreLine
                
if (function_exists('wp_debug_backtrace_summary')) $log_message .= ' Backtrace: '.wp_debug_backtrace_summary();
                
$updraftplus->log($log_message);
                
$updraftplus->log(sprintf(__('A PHP fatal error (%s) has occurred: %s''updraftplus'), get_class($e), $e->getMessage()), 'error');
                die();
            }
            if (
null === $result) return basename($file);
            return 
$result;
        } else {
            return 
basename($file);
        }
    }

    
/**
     * Close the database file currently being written
     *
     * @return Boolean
     */
    
private function backup_db_close() {
        return 
$this->dbhandle_isgz gzclose($this->dbhandle) : fclose($this->dbhandle);
    }

    
/**
     * Open a file, store its filehandle
     *
     * @param String  $file     Full path to the file to open
     * @param Boolean $allow_gz Use gzopen() if available, instead of fopen()
     *
     * @return Resource - the opened file handle
     */
    
public function backup_db_open($file$allow_gz true) {
        if (
function_exists('gzopen') && true == $allow_gz) {
            
$this->dbhandle gzopen($file'w');
            
$this->dbhandle_isgz true;
        } else {
            
$this->dbhandle fopen($file'w');
            
$this->dbhandle_isgz false;
        }
        if (
false === $this->dbhandle) {
            global 
$updraftplus;
            
$updraftplus->log("ERROR: $file: Could not open the backup file for writing");
            
$updraftplus->log($file.": ".__("Could not open the backup file for writing"'updraftplus'), 'error');
        }
        
$this->db_current_raw_bytes 0;
        return 
$this->dbhandle;
    }

    
/**
     * Adds a line to the database backup
     *
     * @param String $query_line - the line to log
     *
     * @return Integer|Boolean - the number of octets written, or false for a failure (as returned by gzwrite() / fwrite)
     */
    
public function stow($query_line) {
        if (
$this->dbhandle_isgz) {
            if (
false == ($ret = @gzwrite($this->dbhandle$query_line))) {// phpcs:ignore Generic.PHP.NoSilencedErrors.Discouraged
                // $updraftplus->log(__('There was an error writing a line to the backup script:', 'updraftplus').'  '.$query_line.'  '.$php_errormsg, 'error');
            
}
        } else {
            if (
false == ($ret = @fwrite($this->dbhandle$query_line))) {// phpcs:ignore Generic.PHP.NoSilencedErrors.Discouraged
                // $updraftplus->log(__('There was an error writing a line to the backup script:', 'updraftplus').'  '.$query_line.'  '.$php_errormsg, 'error');
            
}
        }
        
$this->db_current_raw_bytes += strlen($query_line);
        return 
$ret;
    }

    
/**
     * Stow the database backup header
     */
    
private function backup_db_header() {

        global 
$updraftplus;
        
$wp_version $updraftplus->get_wordpress_version();
        
$mysql_version $this->wpdb_obj->get_var('SELECT VERSION()');
        if (
'' == $mysql_version$mysql_version $this->wpdb_obj->db_version();

        if (
'wp' == $this->whichdb) {
            
$wp_upload_dir wp_upload_dir();
            
$this->stow("# WordPress MySQL database backup\n");
            
$this->stow("# Created by UpdraftPlus version ".$updraftplus->version." (https://updraftplus.com)\n");
            
$this->stow("# WordPress Version: $wp_version, running on PHP ".phpversion()." (".$_SERVER["SERVER_SOFTWARE"]."), MySQL $mysql_version\n");
            
$this->stow("# Backup of: ".untrailingslashit(site_url())."\n");
            
$this->stow("# Home URL: ".untrailingslashit(home_url())."\n");
            
$this->stow("# Content URL: ".untrailingslashit(content_url())."\n");
            
$this->stow("# Uploads URL: ".untrailingslashit($wp_upload_dir['baseurl'])."\n");
            
$this->stow("# Table prefix: ".$this->table_prefix_raw."\n");
            
$this->stow("# Filtered table prefix: ".$this->table_prefix."\n");
            
$this->stow("# Site info: multisite=".(is_multisite() ? '1' '0')."\n");
            
$this->stow("# Site info: sql_mode=".$this->wpdb_obj->get_var('SELECT @@SESSION.sql_mode')."\n");
            
$this->stow("# Site info: end\n");
        } else {
            
$this->stow("# MySQL database backup (supplementary database ".$this->whichdb.")\n");
            
$this->stow("# Created by UpdraftPlus version ".$updraftplus->version." (https://updraftplus.com)\n");
            
$this->stow("# WordPress Version: $wp_version, running on PHP ".phpversion()." (".$_SERVER["SERVER_SOFTWARE"]."), MySQL $mysql_version\n");
            
$this->stow("# ".sprintf('External database: (%s)'$this->dbinfo['user'].'@'.$this->dbinfo['host'].'/'.$this->dbinfo['name'])."\n");
            
$this->stow("# Backup created by: ".untrailingslashit(site_url())."\n");
            
$this->stow("# Table prefix: ".$this->table_prefix_raw."\n");
            
$this->stow("# Filtered table prefix: ".$this->table_prefix."\n");
        }

        
$label $updraftplus->jobdata_get('label');
        if (!empty(
$label)) $this->stow("# Label: $label\n");

        
$this->stow("\n# Generated: ".date("l j. F Y H:i T")."\n");
        
$this->stow("# Hostname: ".$this->dbinfo['host']."\n");
        
$this->stow("# Database: ".UpdraftPlus_Manipulation_Functions::backquote($this->dbinfo['name'])."\n");

        if (!empty(
$this->skipped_tables[$this->whichdb])) {
            if (
'wp' == $this->whichdb) {
                
$this->stow("# Skipped tables: " implode(', '$this->skipped_tables['wp'])."\n");
            } elseif (isset(
$this->skipped_tables[$this->dbinfo['name']])) {
                
$this->stow("# Skipped tables: " implode(', '$this->skipped_tables[$this->dbinfo['name']])."\n");
            }
        }
        
        
$this->stow("# --------------------------------------------------------\n");

        
$this->stow("/*!40101 SET @OLD_CHARACTER_SET_CLIENT=@@CHARACTER_SET_CLIENT */;\n");
        
$this->stow("/*!40101 SET @OLD_CHARACTER_SET_RESULTS=@@CHARACTER_SET_RESULTS */;\n");
        
$this->stow("/*!40101 SET @OLD_COLLATION_CONNECTION=@@COLLATION_CONNECTION */;\n");
        
$this->stow("/*!40101 SET NAMES ".$updraftplus->get_connection_charset($this->wpdb_obj)." */;\n");
        
$this->stow("/*!40101 SET foreign_key_checks = 0 */;\n\n");
        
    }

    
/**
     * This function recursively packs the zip, dereferencing symlinks but packing into a single-parent tree for universal unpacking
     *
     * @param String  $fullpath              Full path
     * @param String  $use_path_when_storing Controls the path to use when storing in the zip file
     * @param String  $original_fullpath     Original path
     * @param Integer $startlevels           How deep within the directory structure the recursive operation has gone
     * @param Array   $exclude               passed by reference so that we can remove elements as they are matched - saves time checking against already-dealt-with objects]
     * @return Boolean
     */
    
private function makezip_recursive_add($fullpath$use_path_when_storing$original_fullpath$startlevels, &$exclude) {

// $zipfile = $this->zip_basename.(($this->index == 0) ? '' : ($this->index+1)).'.zip.tmp';

        
global $updraftplus;

        
// Only BinZip supports symlinks. This means that as a consistent outcome, the only think that can be done with directory symlinks is either a) potentially duplicate the data or b) skip it. Whilst with internal WP entities (e.g. plugins) we definitely want the data, in the case of user-selected directories, we assume the user knew what they were doing when they chose the directory - i.e. we can skip symlink-accessed data that's outside.
        
if (is_link($fullpath) && is_dir($fullpath) && 'more' == $this->whichone) {
            
$updraftplus->log("Directory symlink encounted in more files backup: $use_path_when_storing -> ".readlink($fullpath).": skipping");
            return 
true;
        }
        
        
// De-reference. Important to do to both, because on Windows only doing it to one can make them non-equal, where they were previously equal - something which we later rely upon
        
$fullpath realpath($fullpath);
        
$original_fullpath realpath($original_fullpath);

        
// Is the place we've ended up above the original base? That leads to infinite recursion
        
if (($fullpath !== $original_fullpath && strpos($original_fullpath$fullpath) === 0) || ($original_fullpath == $fullpath && ((1== $startlevels && strpos($use_path_when_storing'/') !== false) || (== $startlevels && substr_count($use_path_when_storing'/') >1)))) {
            
$updraftplus->log("Infinite recursion: symlink led us to $fullpath, which is within $original_fullpath");
            
$updraftplus->log(__("Infinite recursion: consult your log for more information"'updraftplus'), 'error');
            return 
false;
        }

        
// This is sufficient for the ones we have exclude options for - uploads, others, wpcore
        
$stripped_storage_path = (== $startlevels) ? $use_path_when_storing substr($use_path_when_storingstrpos($use_path_when_storing'/') + 1);
        if (
false !== ($fkey array_search($stripped_storage_path$exclude))) {
            
$updraftplus->log("Entity excluded by configuration option: $stripped_storage_path");
            unset(
$exclude[$fkey]);
            return 
true;
        }

        
$if_altered_since $this->makezip_if_altered_since;

        if (
is_file($fullpath)) {
            if (!empty(
$this->excluded_extensions) && $this->is_entity_excluded_by_extension($fullpath)) {
                
$updraftplus->log("Entity excluded by configuration option (extension): ".basename($fullpath));
            } elseif (!empty(
$this->excluded_prefixes) && $this->is_entity_excluded_by_prefix($fullpath)) {
                
$updraftplus->log("Entity excluded by configuration option (prefix): ".basename($fullpath));
            } elseif (
apply_filters('updraftplus_exclude_file'false$fullpath)) {
                
$updraftplus->log("Entity excluded by filter: ".basename($fullpath));
            } elseif (
is_readable($fullpath)) {
                
$mtime filemtime($fullpath);
                
$key = ($fullpath == $original_fullpath) ? ((== $startlevels) ? $use_path_when_storing $this->basename($fullpath)) : $use_path_when_storing.'/'.$this->basename($fullpath);
                if (
$mtime && $mtime $if_altered_since) {
                    
$this->zipfiles_batched[$fullpath] = $key;
                    
$this->makezip_recursive_batchedbytes += @filesize($fullpath);// phpcs:ignore Generic.PHP.NoSilencedErrors.Discouraged
                    // @touch($zipfile);
                
} else {
                    
$this->zipfiles_skipped_notaltered[$fullpath] = $key;
                }
            } else {
                
$updraftplus->log("$fullpath: unreadable file");
                
$updraftplus->log(sprintf(__("%s: unreadable file - could not be backed up (check the file permissions and ownership)"'updraftplus'), $fullpath), 'warning');
            }
        } elseif (
is_dir($fullpath)) {
            if (
$fullpath == $this->updraft_dir_realpath) {
                
$updraftplus->log("Skip directory (UpdraftPlus backup directory): $use_path_when_storing");
                return 
true;
            }
            
            if (
apply_filters('updraftplus_exclude_directory'false$fullpath$use_path_when_storing)) {
                
$updraftplus->log("Skip filtered directory: $use_path_when_storing");
                return 
true;
            }
            
            if (
file_exists($fullpath.'/.donotbackup')) {
                
$updraftplus->log("Skip directory (.donotbackup file found): $use_path_when_storing");
                return 
true;
            }

            if (!isset(
$this->existing_files[$use_path_when_storing])) $this->zipfiles_dirbatched[] = $use_path_when_storing;
            
            if (!
$dir_handle = @opendir($fullpath)) {// phpcs:ignore Generic.PHP.NoSilencedErrors.Discouraged
                
$updraftplus->log("Failed to open directory: $fullpath");
                
$updraftplus->log(sprintf(__("Failed to open directory (check the file permissions and ownership): %s"'updraftplus'), $fullpath), 'error');
                return 
false;
            }

            while (
false !== ($e readdir($dir_handle))) {
                if (
'.' == $e || '..' == $e) continue;

                if (
is_link($fullpath.'/'.$e)) {
                    
$deref realpath($fullpath.'/'.$e);
                    if (
is_file($deref)) {
                        if (
is_readable($deref)) {
                            
$use_stripped $stripped_storage_path.'/'.$e;
                            if (
false !== ($fkey array_search($use_stripped$exclude))) {
                                
$updraftplus->log("Entity excluded by configuration option: $use_stripped");
                                unset(
$exclude[$fkey]);
                            } elseif (!empty(
$this->excluded_extensions) && $this->is_entity_excluded_by_extension($e)) {
                                
$updraftplus->log("Entity excluded by configuration option (extension): $use_stripped");
                            } elseif (!empty(
$this->excluded_prefixes) && $this->is_entity_excluded_by_prefix($e)) {
                                
$updraftplus->log("Entity excluded by configuration option (prefix): $use_stripped");
                            } elseif (
apply_filters('updraftplus_exclude_file'false$deref$use_stripped)) {
                                
$updraftplus->log("Entity excluded by filter: $use_stripped");
                            } else {
                                
$mtime filemtime($deref);
                                if (
$mtime && $mtime $if_altered_since) {
                                    
$this->zipfiles_batched[$deref] = $use_path_when_storing.'/'.$e;
                                    
$this->makezip_recursive_batchedbytes += @filesize($deref);// phpcs:ignore Generic.PHP.NoSilencedErrors.Discouraged
                                    // @touch($zipfile);
                                
} else {
                                    
$this->zipfiles_skipped_notaltered[$deref] = $use_path_when_storing.'/'.$e;
                                }
                            }
                        } else {
                            
$updraftplus->log("$deref: unreadable file");
                            
$updraftplus->log(sprintf(__("%s: unreadable file - could not be backed up"), $deref), 'warning');
                        }
                    } elseif (
is_dir($deref)) {
                    
// $link_target = readlink($deref);
// $updraftplus->log("Symbolic link $use_path_when_storing/$e -> $link_target");
                    
                        
$this->makezip_recursive_add($deref$use_path_when_storing.'/'.$e$original_fullpath$startlevels$exclude);
                    }
                } elseif (
is_file($fullpath.'/'.$e)) {
                    if (
is_readable($fullpath.'/'.$e)) {
                        
$use_stripped $stripped_storage_path.'/'.$e;
                        if (
false !== ($fkey array_search($use_stripped$exclude))) {
                            
$updraftplus->log("Entity excluded by configuration option: $use_stripped");
                            unset(
$exclude[$fkey]);
                        } elseif (!empty(
$this->excluded_extensions) && $this->is_entity_excluded_by_extension($e)) {
                            
$updraftplus->log("Entity excluded by configuration option (extension): $use_stripped");
                        } elseif (!empty(
$this->excluded_prefixes) && $this->is_entity_excluded_by_prefix($e)) {
                            
$updraftplus->log("Entity excluded by configuration option (prefix): $use_stripped");
                        } elseif (
apply_filters('updraftplus_exclude_file'false$fullpath.'/'.$e)) {
                            
$updraftplus->log("Entity excluded by filter: $use_stripped");
                        } else {
                            
$mtime filemtime($fullpath.'/'.$e);
                            if (
$mtime && $mtime $if_altered_since) {
                                
$this->zipfiles_batched[$fullpath.'/'.$e] = $use_path_when_storing.'/'.$e;
                                
$this->makezip_recursive_batchedbytes += @filesize($fullpath.'/'.$e);// phpcs:ignore Generic.PHP.NoSilencedErrors.Discouraged
                            
} else {
                                
$this->zipfiles_skipped_notaltered[$fullpath.'/'.$e] = $use_path_when_storing.'/'.$e;
                            }
                        }
                    } else {
                        
$updraftplus->log("$fullpath/$e: unreadable file");
                        
$updraftplus->log(sprintf(__("%s: unreadable file - could not be backed up"'updraftplus'), $use_path_when_storing.'/'.$e), 'warning'"unrfile-$e");
                    }
                } elseif (
is_dir($fullpath.'/'.$e)) {
                    if (
'wpcore' == $this->whichone && 'updraft' == $e && basename($use_path_when_storing) == 'wp-content' && (!defined('UPDRAFTPLUS_WPCORE_INCLUDE_UPDRAFT_DIRS') || !UPDRAFTPLUS_WPCORE_INCLUDE_UPDRAFT_DIRS)) {
                        
// This test, of course, won't catch everything - it just aims to make things better by default
                        
$updraftplus->log("Directory excluded for looking like a sub-site's internal UpdraftPlus directory (enable by defining UPDRAFTPLUS_WPCORE_INCLUDE_UPDRAFT_DIRS): ".$use_path_when_storing.'/'.$e);
                    } else {
                        
// no need to add_empty_dir here, as it gets done when we recurse
                        
$this->makezip_recursive_add($fullpath.'/'.$e$use_path_when_storing.'/'.$e$original_fullpath$startlevels$exclude);
                    }
                }
            }
            
closedir($dir_handle);
        } else {
            
$updraftplus->log("Unexpected: path ($use_path_when_storing) fails both is_file() and is_dir()");
        }

        return 
true;

    }

    private function 
get_excluded_extensions($exclude) {
        if (!
is_array($exclude)) $exclude = array();
        
$exclude_extensions = array();
        foreach (
$exclude as $ex) {
            if (
preg_match('/^ext:(.+)$/i'$ex$matches)) {
                
$exclude_extensions[] = strtolower($matches[1]);
            }
        }

        if (
defined('UPDRAFTPLUS_EXCLUDE_EXTENSIONS')) {
            
$exclude_from_define explode(','UPDRAFTPLUS_EXCLUDE_EXTENSIONS);
            foreach (
$exclude_from_define as $ex) {
                
$exclude_extensions[] = strtolower(trim($ex));
            }
        }

        return 
$exclude_extensions;
    }

    private function 
get_excluded_prefixes($exclude) {
        if (!
is_array($exclude)) $exclude = array();
        
$exclude_prefixes = array();
        foreach (
$exclude as $pref) {
            if (
preg_match('/^prefix:(.+)$/i'$pref$matches)) {
                
$exclude_prefixes[] = strtolower($matches[1]);
            }
        }

        return 
$exclude_prefixes;
    }

    private function 
is_entity_excluded_by_extension($entity) {
        foreach (
$this->excluded_extensions as $ext) {
            if (!
$ext) continue;
            
$eln strlen($ext);
            if (
strtolower(substr($entity, -$eln$eln)) == $ext) return true;
        }
        return 
false;
    }

    private function 
is_entity_excluded_by_prefix($entity) {
        
$entity basename($entity);
        foreach (
$this->excluded_prefixes as $pref) {
            if (!
$pref) continue;
            
$eln strlen($pref);
            if (
strtolower(substr($entity0$eln)) == $pref) return true;
        }
        return 
false;
    }

    private function 
unserialize_gz_cache_file($file) {
        if (!
$whandle gzopen($file'r')) return false;
        global 
$updraftplus;
        
$emptimes 0;
        
$var '';
        while (!
gzeof($whandle)) {
            
$bytes = @gzread($whandle1048576);// phpcs:ignore Generic.PHP.NoSilencedErrors.Discouraged
            
if (empty($bytes)) {
                
$emptimes++;
                
$updraftplus->log("Got empty gzread ($emptimes times)");
                if (
$emptimes>2) return false;
            } else {
                
$var .= $bytes;
            }
        }
        
gzclose($whandle);
        return 
unserialize($var);
    }



    
/**
     * Make Zip File.
     *
     * @param Array|String $source               Caution: $source is allowed to be an array, not just a filename
     * @param String       $backup_file_basename Name of backup file
     * @param String       $whichone             Backup entity type (e.g. 'plugins')
     * @param Boolean       $retry_on_error       Set to retry upon error
     * @return Boolean
     */
    
private function make_zipfile($source$backup_file_basename$whichone$retry_on_error true) {

        global 
$updraftplus;

        
$original_index $this->index;

        
$itext = (empty($this->index)) ? '' : ($this->index+1);
        
$destination_base $backup_file_basename.'-'.$whichone.$itext.'.zip.tmp';
        
// $destination is the temporary file (ending in .tmp)
        
$destination $this->updraft_dir.'/'.$destination_base;

        
// When to prefer PCL:
        // - We were asked to
        // - No zip extension present and no relevant method present
        // The zip extension check is not redundant, because method_exists segfaults some PHP installs, leading to support requests

        // We need meta-info about $whichone
        
$backupable_entities $updraftplus->get_backupable_file_entities(truefalse);
        
// This is only used by one corner-case in BinZip
        // $this->make_zipfile_source = (isset($backupable_entities[$whichone])) ? $backupable_entities[$whichone] : $source;
        
$this->make_zipfile_source = (is_array($source) && isset($backupable_entities[$whichone])) ? (('uploads' == $whichone) ? dirname($backupable_entities[$whichone]) : $backupable_entities[$whichone]) : dirname($source);

        
$this->existing_files = array();
        
// Used for tracking compression ratios
        
$this->existing_files_rawsize 0;
        
$this->existing_zipfiles_size 0;

        
// Enumerate existing files
        // Usually first_linked_index is zero; the exception being with more files, where previous zips' contents are irrelevant
        
for ($j $this->first_linked_index$j <= $this->index$j++) {
            
$jtext = (== $j) ? '' $j+1;
            
// This is, in a non-obvious way, compatible with filenames which indicate increments
            // $j does not need to start at zero; it should start at the index which the current entity split at. However, this is not directly known, and can only be deduced from examining the filenames. And, for other indexes from before the current increment, the searched-for filename won't exist (even if there is no cloud storage). So, this indirectly results in the desired outcome when we start from $j=0.
            
$examine_zip $this->updraft_dir.'/'.$backup_file_basename.'-'.$whichone.$jtext.'.zip'.(($j == $this->index) ? '.tmp' '');

            
// This comes from https://wordpress.org/support/topic/updraftplus-not-moving-all-files-to-remote-server - where it appears that the jobdata's record of the split was done (i.e. database write), but the *earlier* rename of the .tmp file was not done (i.e. I/O lost). i.e. In theory, this should be impossible; but, the sychnronicity apparently cannot be fully relied upon in some setups. The check for the index being one behind is being conservative - there's no inherent reason why it couldn't be done for other indexes.
            // Note that in this 'impossible' case, no backup data was being lost - the design still ensures that the on-disk backup is fine. The problem was a gap in the sequence numbering of the zip files, leading to user confusion.
            // Other examples of this appear to be in HS#1001 and #1047
            
if ($j != $this->index && !file_exists($examine_zip)) {
                
$alt_examine_zip $this->updraft_dir.'/'.$backup_file_basename.'-'.$whichone.$jtext.'.zip'.(($j == $this->index 1) ? '.tmp' '');
                if (
$alt_examine_zip != $examine_zip && file_exists($alt_examine_zip) && is_readable($alt_examine_zip) && filesize($alt_examine_zip)>0) {
                    
$updraftplus->log("Looked-for zip file not found; but non-zero .tmp zip was, despite not being current index ($j != ".$this->index." - renaming zip (assume previous resumption's IO was lost before kill)");
                    if (
rename($alt_examine_zip$examine_zip)) {
                        
clearstatcache();
                    } else {
                        
$updraftplus->log("Rename failed - backup zips likely to not have sequential numbers (does not affect backup integrity, but can cause user confusion)");
                    }
                }
            }

            
// If the file exists, then we should grab its index of files inside, and sizes
            // Then, when we come to write a file, we should check if it's already there, and only add if it is not
            
if (file_exists($examine_zip) && is_readable($examine_zip) && filesize($examine_zip)>0) {
                
$this->existing_zipfiles_size += filesize($examine_zip);
                
$zip = new $this->use_zip_object;
                if (
true !== $zip->open($examine_zip)) {
                    
$updraftplus->log("Could not open zip file to examine (".$zip->last_error."); will remove: ".basename($examine_zip));
                    @
unlink($examine_zip);// phpcs:ignore Generic.PHP.NoSilencedErrors.Discouraged
                
} else {
                
                    
// Don't put this in the for loop, or the magic __get() method gets repeatedly called every time the loop goes round
                    
$numfiles $zip->numFiles;

                    for (
$i=0$i $numfiles$i++) {
                        
$si $zip->statIndex($i);
                        
$name $si['name'];
                        
// Exclude folders
                        
if ('/' == substr($name, -1)) continue;
                        
$this->existing_files[$name] = $si['size'];
                        
$this->existing_files_rawsize += $si['size'];
                    }

                    @
$zip->close();// phpcs:ignore Generic.PHP.NoSilencedErrors.Discouraged
                
}

                
$updraftplus->log(basename($examine_zip).": Zip file already exists, with ".count($this->existing_files)." files");

                
// try_split is set if there have been no check-ins recently - or if it needs to be split anyway
                
if ($j == $this->index) {
                    if (isset(
$this->try_split)) {
                        if (
filesize($examine_zip) > 50*1048576) {
                            
// We could, as a future enhancement, save this back to the job data, if we see a case that needs it
                            
$this->zip_split_every max(
                                (int) 
$this->zip_split_every/2,
                                
UPDRAFTPLUS_SPLIT_MIN*1048576,
                                
min(filesize($examine_zip)-1048576$this->zip_split_every)
                            );
                            
$updraftplus->jobdata_set('split_every', (int) ($this->zip_split_every/1048576));
                            
$updraftplus->log("No check-in on last two runs; bumping index and reducing zip split to: ".round($this->zip_split_every/10485761)." MB");
                            
$do_bump_index true;
                        }
                        unset(
$this->try_split);
                    } elseif (
filesize($examine_zip) > $this->zip_split_every) {
                        
$updraftplus->log(sprintf("Zip size is at/near split limit (%s MB / %s MB) - bumping index (from: %d)"filesize($examine_zip), round($this->zip_split_every/10485761), $this->index));
                        
$do_bump_index true;
                    }
                }

            } elseif (
file_exists($examine_zip)) {
                
$updraftplus->log("Zip file already exists, but is not readable or was zero-sized; will remove: ".basename($examine_zip));
                @
unlink($examine_zip);// phpcs:ignore Generic.PHP.NoSilencedErrors.Discouraged
            
}
        }

        
$this->zip_last_ratio = ($this->existing_files_rawsize 0) ? ($this->existing_zipfiles_size/$this->existing_files_rawsize) : 1;

        
$this->zipfiles_added 0;
        
$this->zipfiles_added_thisrun 0;
        
$this->zipfiles_dirbatched = array();
        
$this->zipfiles_batched = array();
        
$this->zipfiles_skipped_notaltered = array();
        
$this->zipfiles_lastwritetime time();
        
$this->zip_basename $this->updraft_dir.'/'.$backup_file_basename.'-'.$whichone;

        if (!empty(
$do_bump_index)) $this->bump_index();

        
$error_occurred false;

        
// Store this in its original form
        
$this->source $source;

        
// Reset. This counter is used only with PcLZip, to decide if it's better to do it all-in-one
        
$this->makezip_recursive_batchedbytes 0;
        if (!
is_array($source)) $source = array($source);

        
$exclude $updraftplus->get_exclude($whichone);

        
$files_enumerated_at $updraftplus->jobdata_get('files_enumerated_at');
        if (!
is_array($files_enumerated_at)) $files_enumerated_at = array();
        
$files_enumerated_at[$whichone] = time();
        
$updraftplus->jobdata_set('files_enumerated_at'$files_enumerated_at);

        
$this->makezip_if_altered_since is_array($this->altered_since) ? (isset($this->altered_since[$whichone]) ? $this->altered_since[$whichone] : -1) : -1;

        
// Reset
        
$got_uploads_from_cache false;
        
        
// Uploads: can/should we get it back from the cache?
        // || 'others' == $whichone
        
if (('uploads' == $whichone || 'others' == $whichone) && function_exists('gzopen') && function_exists('gzread')) {
            
$use_cache_files false;
            
$cache_file_base $this->zip_basename.'-cachelist-'.$this->makezip_if_altered_since;
            
// Cache file suffixes: -zfd.gz.tmp, -zfb.gz.tmp, -info.tmp, (possible)-zfs.gz.tmp
            
if (file_exists($cache_file_base.'-zfd.gz.tmp') && file_exists($cache_file_base.'-zfb.gz.tmp') && file_exists($cache_file_base.'-info.tmp')) {
                
// Cache files exist; shall we use them?
                
$mtime filemtime($cache_file_base.'-zfd.gz.tmp');
                
// Require < 30 minutes old
                
if (time() - $mtime 1800) {
                    
$use_cache_files true;
                }
                
$any_failures false;
                if (
$use_cache_files) {
                    
$var $this->unserialize_gz_cache_file($cache_file_base.'-zfd.gz.tmp');
                    if (
is_array($var)) {
                        
$this->zipfiles_dirbatched $var;
                        
$var $this->unserialize_gz_cache_file($cache_file_base.'-zfb.gz.tmp');
                        if (
is_array($var)) {
                            
$this->zipfiles_batched $var;
                            if (
file_exists($cache_file_base.'-info.tmp')) {
                                
$var maybe_unserialize(file_get_contents($cache_file_base.'-info.tmp'));
                                if (
is_array($var) && isset($var['makezip_recursive_batchedbytes'])) {
                                    
$this->makezip_recursive_batchedbytes $var['makezip_recursive_batchedbytes'];
                                    if (
file_exists($cache_file_base.'-zfs.gz.tmp')) {
                                        
$var $this->unserialize_gz_cache_file($cache_file_base.'-zfs.gz.tmp');
                                        if (
is_array($var)) {
                                            
$this->zipfiles_skipped_notaltered $var;
                                        } else {
                                            
$any_failures true;
                                        }
                                    } else {
                                        
$this->zipfiles_skipped_notaltered = array();
                                    }
                                } else {
                                    
$any_failures true;
                                }
                            }
                        } else {
                            
$any_failures true;
                        }
                    } else {
                        
$any_failures true;
                    }
                    if (
$any_failures) {
                        
$updraftplus->log("Failed to recover file lists from existing cache files");
                        
// Reset it all
                        
$this->zipfiles_skipped_notaltered = array();
                        
$this->makezip_recursive_batchedbytes 0;
                        
$this->zipfiles_batched = array();
                        
$this->zipfiles_dirbatched = array();
                    } else {
                        
$updraftplus->log("File lists recovered from cache files; sizes: ".count($this->zipfiles_batched).", ".count($this->zipfiles_batched).", ".count($this->zipfiles_skipped_notaltered).")");
                        
$got_uploads_from_cache true;
                    }
                }
            }
        }

        
$time_counting_began time();

        
$this->excluded_extensions $this->get_excluded_extensions($exclude);
        
$this->excluded_prefixes $this->get_excluded_prefixes($exclude);

        foreach (
$source as $element) {
            
// makezip_recursive_add($fullpath, $use_path_when_storing, $original_fullpath, $startlevels = 1, $exclude_array)
            
if ('uploads' == $whichone) {
                if (empty(
$got_uploads_from_cache)) {
                    
$dirname dirname($element);
                    
$basename $this->basename($element);
                    
$add_them $this->makezip_recursive_add($elementbasename($dirname).'/'.$basename$element2$exclude);
                } else {
                    
$add_them true;
                }
            } else {
                if (empty(
$got_uploads_from_cache)) {
                    
$add_them $this->makezip_recursive_add($element$this->basename($element), $element1$exclude);
                } else {
                    
$add_them true;
                }
            }
            if (
is_wp_error($add_them) || false === $add_them$error_occurred true;
        }

        
$time_counting_ended time();

        
// Cache the file scan, if it looks like it'll be useful
        // We use gzip to reduce the size as on hosts which limit disk I/O, the cacheing may make things worse
        // || 'others' == $whichone
        
if (('uploads' == $whichone || 'others' == $whichone) && !$error_occurred && function_exists('gzopen') && function_exists('gzwrite')) {
            
$cache_file_base $this->zip_basename.'-cachelist-'.$this->makezip_if_altered_since;

            
// Just approximate - we're trying to avoid an otherwise-unpredictable PHP fatal error. Cacheing only happens if file enumeration took a long time - so presumably there are very many.
            
$memory_needed_estimate 0;
            foreach (
$this->zipfiles_batched as $k => $v) {
                
$memory_needed_estimate += strlen($k)+strlen($v)+12;
            }

            
// We haven't bothered to check if we just fetched the files from cache, as that shouldn't take a long time and so shouldn't trigger this
            // Let us suppose we need 15% overhead for gzipping
            
            
$memory_limit ini_get('memory_limit');
            
$memory_usage round(@memory_get_usage(false)/10485761);// phpcs:ignore Generic.PHP.NoSilencedErrors.Discouraged
            
$memory_usage2 round(@memory_get_usage(true)/10485761);// phpcs:ignore Generic.PHP.NoSilencedErrors.Discouraged
            
            
if ($time_counting_ended-$time_counting_began 20 && $updraftplus->verify_free_memory($memory_needed_estimate*0.15) && $whandle gzopen($cache_file_base.'-zfb.gz.tmp''w')) {
                
$updraftplus->log("File counting took a long time (".($time_counting_ended $time_counting_began)."s); will attempt to cache results (memory_limit: $memory_limit (used: ${memory_usage}M | ${memory_usage2}M), estimated uncompressed bytes: ".round($memory_needed_estimate/10241)." Kb)");
                
                
$buf 'a:'.count($this->zipfiles_batched).':{';
                foreach (
$this->zipfiles_batched as $file => $add_as) {
                    
$k addslashes($file);
                    
$v addslashes($add_as);
                    
$buf .= 's:'.strlen($k).':"'.$k.'";s:'.strlen($v).':"'.$v.'";';
                    if (
strlen($buf) > 1048576) {
                        
gzwrite($whandle$bufstrlen($buf));
                        
$buf '';
                    }
                }
                
$buf .= '}';
                
$final gzwrite($whandle$buf);
                unset(
$buf);
                
                if (!
$final) {
                    @
unlink($cache_file_base.'-zfb.gz.tmp');// phpcs:ignore Generic.PHP.NoSilencedErrors.Discouraged
                    
@gzclose($whandle);// phpcs:ignore Generic.PHP.NoSilencedErrors.Discouraged
                
} else {
                    
gzclose($whandle);
                    if (!empty(
$this->zipfiles_skipped_notaltered)) {
                        if (
$shandle gzopen($cache_file_base.'-zfs.gz.tmp''w')) {
                            if (!
gzwrite($shandleserialize($this->zipfiles_skipped_notaltered))) {
                                
$aborted_on_skipped true;
                            }
                            
gzclose($shandle);
                        } else {
                            
$aborted_on_skipped true;
                        }
                    }
                    if (!empty(
$aborted_on_skipped)) {
                        @
unlink($cache_file_base.'-zfs.gz.tmp');// phpcs:ignore Generic.PHP.NoSilencedErrors.Discouraged
                        
@unlink($cache_file_base.'-zfb.gz.tmp');// phpcs:ignore Generic.PHP.NoSilencedErrors.Discouraged
                    
} else {
                        
$info_array = array('makezip_recursive_batchedbytes' => $this->makezip_recursive_batchedbytes);
                        if (!
file_put_contents($cache_file_base.'-info.tmp'serialize($info_array))) {
                            @
unlink($cache_file_base.'-zfs.gz.tmp');// phpcs:ignore Generic.PHP.NoSilencedErrors.Discouraged
                            
@unlink($cache_file_base.'-zfb.gz.tmp');// phpcs:ignore Generic.PHP.NoSilencedErrors.Discouraged
                        
}
                        if (
$dhandle gzopen($cache_file_base.'-zfd.gz.tmp''w')) {
                            if (!
gzwrite($dhandleserialize($this->zipfiles_dirbatched))) {
                                
$aborted_on_dirbatched true;
                            }
                            
gzclose($dhandle);
                        } else {
                            
$aborted_on_dirbatched true;
                        }
                        if (!empty(
$aborted_on_dirbatched)) {
                            @
unlink($cache_file_base.'-zfs.gz.tmp');// phpcs:ignore Generic.PHP.NoSilencedErrors.Discouraged
                            
@unlink($cache_file_base.'-zfd.gz.tmp');// phpcs:ignore Generic.PHP.NoSilencedErrors.Discouraged
                            
@unlink($cache_file_base.'-zfb.gz.tmp');// phpcs:ignore Generic.PHP.NoSilencedErrors.Discouraged
                            
@unlink($cache_file_base.'-info.tmp');// phpcs:ignore Generic.PHP.NoSilencedErrors.Discouraged
                        // @codingStandardsIgnoreLine
                        
} else {
                            
// Success.
                        
}
                    }
                }
            }

/*
        Class variables that get altered:
        zipfiles_batched
        makezip_recursive_batchedbytes
        zipfiles_skipped_notaltered
        zipfiles_dirbatched
        Class variables that the result depends upon (other than the state of the filesystem):
        makezip_if_altered_since
        existing_files
        */

        
}

        
// Any not yet dispatched? Under our present scheme, at this point nothing has yet been despatched. And since the enumerating of all files can take a while, we can at this point do a further modification check to reduce the chance of overlaps.
        // This relies on us *not* touch()ing the zip file to indicate to any resumption 'behind us' that we're already here. Rather, we're relying on the combined facts that a) if it takes us a while to search the directory tree, then it should do for the one behind us too (though they'll have the benefit of cache, so could catch very fast) and b) we touch *immediately* after finishing the enumeration of the files to add.
        // $retry_on_error is here being used as a proxy for 'not the second time around, when there might be the remains of the file on the first time around'
        
if ($retry_on_error$updraftplus->check_recent_modification($destination);
        
// Here we're relying on the fact that both PclZip and ZipArchive will happily operate on an empty file. Note that BinZip *won't* (for that, may need a new strategy - e.g. add the very first file on its own, in order to 'lay down a marker')
        
if (empty($do_bump_index)) @touch($destination);// phpcs:ignore Generic.PHP.NoSilencedErrors.Discouraged

        
if (count($this->zipfiles_dirbatched) > || count($this->zipfiles_batched) > 0) {

            
$updraftplus->log(sprintf("Total entities for the zip file: %d directories, %d files (%d skipped as non-modified), %s MB"count($this->zipfiles_dirbatched), count($this->zipfiles_batched), count($this->zipfiles_skipped_notaltered), round($this->makezip_recursive_batchedbytes/10485761)));

            
// No need to warn if we're going to retry anyway. (And if we get killed, the zip will be rescanned for its contents upon resumption).
            
$warn_on_failures = ($retry_on_error) ? false true;
            
$add_them $this->makezip_addfiles($warn_on_failures);

            if (
is_wp_error($add_them)) {
                foreach (
$add_them->get_error_messages() as $msg) {
                    
$updraftplus->log("Error returned from makezip_addfiles: ".$msg);
                }
                
$error_occurred true;
            } elseif (
false === $add_them) {
                
$updraftplus->log("Error: makezip_addfiles returned false");
                
$error_occurred true;
            }

        }

        
// Reset these variables because the index may have changed since we began

        
$itext = empty($this->index) ? '' $this->index+1;
        
$destination_base $backup_file_basename.'-'.$whichone.$itext.'.zip.tmp';
        
$destination $this->updraft_dir.'/'.$destination_base;

        
// ZipArchive::addFile sometimes fails - there's nothing when we expected something.
        // Did not used to have || $error_occured here. But it is better to retry, than to simply warn the user to check his logs.
        
if (((file_exists($destination) || $this->index == $original_index) && @filesize($destination) < 90 && 'UpdraftPlus_ZipArchive' == $this->use_zip_object) || ($error_occurred && $retry_on_error)) {// phpcs:ignore Generic.PHP.NoSilencedErrors.Discouraged
            // This can be made more sophisticated if feedback justifies it. Currently we just switch to PclZip. But, it may have been a BinZip failure, so we could then try ZipArchive if that is available. If doing that, make sure that an infinite recursion isn't made possible.
            
$updraftplus->log("makezip_addfiles(".$this->use_zip_object.") apparently failed (file=".basename($destination).", type=$whichone, size=".filesize($destination).") - retrying with PclZip");
            
$saved_zip_object $this->use_zip_object;
            
$this->use_zip_object 'UpdraftPlus_PclZip';
            
$ret $this->make_zipfile($source$backup_file_basename$whichonefalse);
            
$this->use_zip_object $saved_zip_object;
            return 
$ret;
        }

        
// zipfiles_added > 0 means that $zip->close() has been called. i.e. An attempt was made to add something: something _should_ be there.
        // Why return true even if $error_occurred may be set? 1) Because in that case, a warning has already been logged. 2) Because returning false causes an error to be logged, which means it'll all be retried again. Also 3) this has been the pattern of the code for a long time, and the algorithm has been proven in the real-world: don't change what's not broken.
        // (file_exists($destination) || $this->index == $original_index) might be an alternative to $this->zipfiles_added > 0 - ? But, don't change what's not broken.
        
if (false == $error_occurred || $this->zipfiles_added 0) {
            return 
true;
        } else {
            
$updraftplus->log("makezip failure: zipfiles_added=".$this->zipfiles_added.", error_occurred=".$error_occurred." (method=".$this->use_zip_object.")");
            return 
false;
        }

    }

    private function 
basename($element) {
        
// This function is an ugly, conservative workaround for https://bugs.php.net/bug.php?id=62119. It does not aim to always work-around, but to ensure that nothing is made worse.
        
$dirname dirname($element);
        
$basename_manual preg_replace('#^[\\/]+#'''substr($elementstrlen($dirname)));
        
$basename basename($element);
        if (
$basename_manual != $basename) {
            
$locale setlocale(LC_CTYPE"0");
            if (
'C' == $locale) {
                
setlocale(LC_CTYPE'en_US.UTF8');
                
$basename_new basename($element);
                if (
$basename_new == $basename_manual$basename $basename_new;
                
setlocale(LC_CTYPE$locale);
            }
        }
        return 
$basename;
    }

    
/**
     * Determine if a file should be stored without compression
     *
     * @param String $file - the filename
     *
     * @return Boolean
     */
    
private function file_should_be_stored_without_compression($file) {
        if (!
is_array($this->extensions_to_not_compress)) return false;
        foreach (
$this->extensions_to_not_compress as $ext) {
            
$ext_len strlen($ext);
            if (
strtolower(substr($file, -$ext_len$ext_len)) == $ext) return true;
        }
        return 
false;
    }

    
/**
     * This method will add a manifest file to the backup zip
     *
     * @param  String $whichone - the type of backup (e.g. 'plugins', 'themes')
     *
     * @return Boolean - success/failure status
     */
    
private function updraftplus_include_manifest($whichone) {
        global 
$updraftplus;

        
$manifest_name "updraftplus-manifest.json";
        
$manifest trailingslashit($this->updraft_dir).$manifest_name;

        
$updraftplus->log(sprintf("Creating file manifest ($manifest_name) for incremental backup (included: %d, skipped: %d)"count($this->zipfiles_batched), count($this->zipfiles_skipped_notaltered)));
        
        if (
false === ($handle fopen($manifest'w+'))) return $updraftplus->log("Failed to open manifest file ($manifest_name)");

        
$this->manifest_path $manifest;

        
$version 1;
        
        
$go_to_levels = array(
            
'plugins' => 2,
            
'themes' => 2,
            
'uploads' => 3,
            
'others' => 3
        
);

        
$go_to_levels apply_filters('updraftplus_manifest_go_to_level'$go_to_levels$whichone);

        
$go_to_level = isset($go_to_levels[$whichone]) ? $go_to_levels[$whichone] : 'all';

        
$directory '';

        if (
'more' == $whichone) {
            foreach (
$this->zipfiles_batched as $index => $dir) {
                
$directory '"directory":"' dirname($index) . '",';
            }
        }

        if (
false === fwrite($handle'{"version":'.$version.',"type":"'.$whichone.'",'.$directory.'"listed_levels":"'.$go_to_level.'","contents":{"directories":[')) $updraftplus->log("First write to manifest file failed ($manifest_name)");

        
// First loop: find out which is the last entry, so that we don't write the comma after it
        
$last_dir_index false;
        foreach (
$this->zipfiles_dirbatched as $index => $dir) {
            if (
'all' !== $go_to_level && substr_count($dir'/') > $go_to_level 1) continue;
            
$last_dir_index $index;
        }
        
        
// Second loop: write out the entry
        
foreach ($this->zipfiles_dirbatched as $index => $dir) {
            if (
'all' !== $go_to_level && substr_count($dir'/') > $go_to_level 1) continue;
            
fwrite($handlejson_encode($dir).(($index != $last_dir_index) ? ',' ''));
        }
        
        
// Now do the same for files
        
fwrite($handle'],"files":[');
        
        
$last_file_index false;
        foreach (
$this->zipfiles_batched as $store_as) {
            if (
'all' !== $go_to_level && substr_count($store_as'/') > $go_to_level 1) continue;
            
$last_file_index $store_as;
        }
        foreach (
$this->zipfiles_skipped_notaltered as $store_as) {
            if (
'all' !== $go_to_level && substr_count($store_as'/') > $go_to_level 1) continue;
            
$last_file_index $store_as;
        }

        foreach (
$this->zipfiles_batched as $store_as) {
            if (
'all' !== $go_to_level && substr_count($store_as'/') > $go_to_level 1) continue;
            
fwrite($handlejson_encode($store_as).(($store_as != $last_file_index) ? ',' ''));
        }

        foreach (
$this->zipfiles_skipped_notaltered as $store_as) {
            if (
'all' !== $go_to_level && substr_count($store_as'/') > $go_to_level 1) continue;
            
fwrite($handlejson_encode($store_as).(($store_as != $last_file_index) ? ',' ''));
        }

        
fwrite($handle']}}');
        
fclose($handle);

        
$this->zipfiles_batched[$manifest] = $manifest_name;
        
        
$updraftplus->log("Successfully created file manifest (size: ".filesize($manifest).")");
        
        return 
true;
    }

    
// Q. Why don't we only open and close the zip file just once?
    // A. Because apparently PHP doesn't write out until the final close, and it will return an error if anything file has vanished in the meantime. So going directory-by-directory reduces our chances of hitting an error if the filesystem is changing underneath us (which is very possible if dealing with e.g. 1GB of files)

    /**
     * We batch up the files, rather than do them one at a time. So we are more efficient than open,one-write,close.
     * To call into here, the array $this->zipfiles_batched must be populated (keys=paths, values=add-to-zip-as values). It gets reset upon exit from here.
     *
     * @param Boolean $warn_on_failures See if it warns on faliures or not
     *
     * @return Boolean|WP_Error
     */
    
private function makezip_addfiles($warn_on_failures) {

        global 
$updraftplus;

        
// Used to detect requests to bump the size
        
$bump_index false;
        
$ret true;

        
$zipfile $this->zip_basename.((== $this->index) ? '' : ($this->index+1)).'.zip.tmp';

        
$maxzipbatch $updraftplus->jobdata_get('maxzipbatch'26214400);
        if ((int) 
$maxzipbatch 1024$maxzipbatch 26214400;

        
// Short-circuit the null case, because we want to detect later if something useful happenned
        
if (count($this->zipfiles_dirbatched) == && count($this->zipfiles_batched) == 0) return true;

        
// If on PclZip, then if possible short-circuit to a quicker method (makes a huge time difference - on a folder of 1500 small files, 2.6s instead of 76.6)
        // This assumes that makezip_addfiles() is only called once so that we know about all needed files (the new style)
        // This is rather conservative - because it assumes zero compression. But we can't know that in advance.
        
$force_allinone false;
        if (
== $this->index && $this->makezip_recursive_batchedbytes $this->zip_split_every) {
            
// So far, we only have a processor for this for PclZip; but that check can be removed - need to address the below items
            // TODO: Is this really what we want? Always go all-in-one for < 500MB???? Should be more conservative? Or, is it always faster to go all-in-one? What about situations where we might want to auto-split because of slowness - check that that is still working.
            // TODO: Test this new method for PclZip - are we still getting the performance gains? Test for ZipArchive too.
            
if ('UpdraftPlus_PclZip' == $this->use_zip_object && ($this->makezip_recursive_batchedbytes 512*1048576 || (defined('UPDRAFTPLUS_PCLZIP_FORCEALLINONE') && UPDRAFTPLUS_PCLZIP_FORCEALLINONE == true && 'UpdraftPlus_PclZip' == $this->use_zip_object))) {
                
$updraftplus->log("Only one archive required (".$this->use_zip_object.") - will attempt to do in single operation (data: ".round($this->makezip_recursive_batchedbytes/10241)." KB, split: ".round($this->zip_split_every/10241)." KB)");
// $updraftplus->log("PclZip, and only one archive required - will attempt to do in single operation (data: ".round($this->makezip_recursive_batchedbytes/1024, 1)." KB, split: ".round($this->zip_split_every/1024, 1)." KB)");
                
$force_allinone true;
// if(!class_exists('PclZip')) require_once(ABSPATH.'/wp-admin/includes/class-pclzip.php');
// $zip = new PclZip($zipfile);
// $remove_path = ($this->whichone == 'wpcore') ? untrailingslashit(ABSPATH) : WP_CONTENT_DIR;
// $add_path = false;
// Remove prefixes
// $backupable_entities = $updraftplus->get_backupable_file_entities(true);
// if (isset($backupable_entities[$this->whichone])) {
// if ('plugins' == $this->whichone || 'themes' == $this->whichone || 'uploads' == $this->whichone) {
// $remove_path = dirname($backupable_entities[$this->whichone]);
// To normalise instead of removing (which binzip doesn't support, so we don't do it), you'd remove the dirname() in the above line, and uncomment the below one.
// #$add_path = $this->whichone;
// } else {
// $remove_path = $backupable_entities[$this->whichone];
// }
// }
// if ($add_path) {
// $zipcode = $zip->create($this->source, PCLZIP_OPT_REMOVE_PATH, $remove_path, PCLZIP_OPT_ADD_PATH, $add_path);
// } else {
// $zipcode = $zip->create($this->source, PCLZIP_OPT_REMOVE_PATH, $remove_path);
// }
// if ($zipcode == 0) {
// $updraftplus->log("PclZip Error: ".$zip->errorInfo(true), 'warning');
// return $zip->errorCode();
// } else {
// UpdraftPlus_Job_Scheduler::something_useful_happened();
// return true;
// }
            
}
        }

        
// 05-Mar-2013 - added a new check on the total data added; it appears that things fall over if too much data is contained in the cumulative total of files that were addFile'd without a close-open cycle; presumably data is being stored in memory. In the case in question, it was a batch of MP3 files of around 100MB each - 25 of those equals 2.5GB!

        
$data_added_since_reopen 0;
        
// static $data_added_this_resumption = 0;
        // $max_data_added_any_resumption = $updraftplus->jobdata_get('max_data_added_any_resumption', 0);
        
        // The following array is used only for error reporting if ZipArchive::close fails (since that method itself reports no error messages - we have to track manually what we were attempting to add)
        
$files_zipadded_since_open = array();

        
$zip = new $this->use_zip_object;
        if (
file_exists($zipfile)) {
            
$opencode $zip->open($zipfile);
            
$original_size filesize($zipfile);
            
clearstatcache();
        } else {
            
$create_code = (version_compare(PHP_VERSION'5.2.12''>') && defined('ZIPARCHIVE::CREATE')) ? ZIPARCHIVE::CREATE 1;
            
$opencode $zip->open($zipfile$create_code);
            
$original_size 0;
        }

        if (
true !== $opencode) return new WP_Error('no_open'sprintf(__('Failed to open the zip file (%s) - %s''updraftplus'), $zipfile$zip->last_error));

        if (
apply_filters('updraftplus_include_manifest'false$this->whichone$this)) {
            
$this->updraftplus_include_manifest($this->whichone);
        }

        
// Make sure all directories are created before we start creating files
        
while ($dir array_pop($this->zipfiles_dirbatched)) {
            
$zip->addEmptyDir($dir);
        }
        
$zipfiles_added_thisbatch 0;

        
// Go through all those batched files
        
foreach ($this->zipfiles_batched as $file => $add_as) {

            if (!
file_exists($file)) {
                
$updraftplus->log("File has vanished from underneath us; dropping: $add_as");
                continue;
            }

            
$fsize filesize($file);

            if (
defined('UPDRAFTPLUS_SKIP_FILE_OVER_SIZE') && UPDRAFTPLUS_SKIP_FILE_OVER_SIZE && $fsize UPDRAFTPLUS_SKIP_FILE_OVER_SIZE) {// phpcs:ignore Generic.PHP.NoSilencedErrors.Discouraged
                
$updraftplus->log("File is larger than the user-configured (UPDRAFTPLUS_SKIP_FILE_OVER_SIZE) maximum (is: ".round($fsize/10241)." KB); will skip: ".$add_as);
                continue;
            } elseif (
$fsize UPDRAFTPLUS_WARN_FILE_SIZE) {
                
$updraftplus->log(sprintf(__('A very large file was encountered: %s (size: %s Mb)''updraftplus'), $add_asround($fsize/10485761)), 'warning''vlargefile_'.md5($this->whichone.'#'.$add_as));
            }

            
// Skips files that are already added
            
if (!isset($this->existing_files[$add_as]) || $this->existing_files[$add_as] != $fsize) {

                @
touch($zipfile);// phpcs:ignore Generic.PHP.NoSilencedErrors.Discouraged
                
$zip->addFile($file$add_as);
                
$zipfiles_added_thisbatch++;

                if (
method_exists($zip'setCompressionName') && $this->file_should_be_stored_without_compression($add_as)) {
                    if (
false == ($set_compress $zip->setCompressionName($add_asZipArchive::CM_STORE))) {// phpcs:ignore VariableAnalysis.CodeAnalysis.VariableAnalysis.UnusedVariable
                        
$updraftplus->log("Zip: setCompressionName failed on: $add_as");
                    }
                }

                
// N.B., Since makezip_addfiles() can get called more than once if there were errors detected, potentially $zipfiles_added_thisrun can exceed the total number of batched files (if they get processed twice).
                
$this->zipfiles_added_thisrun++;
                
$files_zipadded_since_open[] = array('file' => $file'addas' => $add_as);
                
$updraftplus->log_remove_warning('vlargefile_'.md5($this->whichone.'#'.$add_as));

                
$data_added_since_reopen += $fsize;
                
// $data_added_this_resumption += $fsize;
                /* Conditions for forcing a write-out and re-open:
                - more than $maxzipbatch bytes have been batched
                - more than 2.0 seconds have passed since the last time we wrote
                - that adding this batch of data is likely already enough to take us over the split limit (and if that happens, then do actually split - to prevent a scenario of progressively tinier writes as we approach but don't actually reach the limit)
                - more than 500 files batched (should perhaps intelligently lower this as the zip file gets bigger - not yet needed)
                */

                // Add 10% margin. It only really matters when the OS has a file size limit, exceeding which causes failure (e.g. 2GB on 32-bit)
                // Since we don't test before the file has been created (so that zip_last_ratio has meaningful data), we rely on max_zip_batch being less than zip_split_every - which should always be the case
                
$reaching_split_limit = ($this->zip_last_ratio && $original_size>&& ($original_size 1.1*$data_added_since_reopen*$this->zip_last_ratio) > $this->zip_split_every) ? true false;

                if (!
$force_allinone && ($zipfiles_added_thisbatch UPDRAFTPLUS_MAXBATCHFILES || $reaching_split_limit || $data_added_since_reopen $maxzipbatch || (time() - $this->zipfiles_lastwritetime) > 2)) {

                    
// We are coming towards a limit and about to close the zip, check if this is a more file backup and the manifest file has made it into this zip if not add it
                    
if (apply_filters('updraftplus_include_manifest'false$this->whichone$this)) {
                        
                        
$manifest false;

                        foreach (
$files_zipadded_since_open as $info) {
                            if (
'updraftplus-manifest.json' == $info['file']) $manifest true;
                        }

                        if (!
$manifest) {
                            @
touch($zipfile);// phpcs:ignore Generic.PHP.NoSilencedErrors.Discouraged
                            
$path array_search('updraftplus-manifest.json'$this->zipfiles_batched);
                            
$zip->addFile($path'updraftplus-manifest.json');
                            
$zipfiles_added_thisbatch++;

                            if (
method_exists($zip'setCompressionName') && $this->file_should_be_stored_without_compression($this->zipfiles_batched[$path])) {
                                if (
false == ($set_compress $zip->setCompressionName($this->zipfiles_batched[$path], ZipArchive::CM_STORE))) {
                                    
$updraftplus->log("Zip: setCompressionName failed on: $this->zipfiles_batched[$path]");
                                }
                            }

                            
// N.B., Since makezip_addfiles() can get called more than once if there were errors detected, potentially $zipfiles_added_thisrun can exceed the total number of batched files (if they get processed twice).
                            
$this->zipfiles_added_thisrun++;
                            
$files_zipadded_since_open[] = array('file' => $path'addas' => 'updraftplus-manifest.json');
                            
$data_added_since_reopen += filesize($path);
                            
// $data_added_this_resumption += filesize($path);
                        
}
                    }

                    @
set_time_limit(UPDRAFTPLUS_SET_TIME_LIMIT);// phpcs:ignore Generic.PHP.NoSilencedErrors.Discouraged
                    
$something_useful_sizetest false;

                    if (
$data_added_since_reopen $maxzipbatch) {
                        
$something_useful_sizetest true;
                        
$updraftplus->log("Adding batch to zip file (".$this->use_zip_object."): over ".round($maxzipbatch/10485761)." MB added on this batch (".round($data_added_since_reopen/10485761)." MB, ".count($this->zipfiles_batched)." files batched, $zipfiles_added_thisbatch (".$this->zipfiles_added_thisrun.") added so far); re-opening (prior size: ".round($original_size/10241).' KB)');
                    } elseif (
$zipfiles_added_thisbatch UPDRAFTPLUS_MAXBATCHFILES) {
                        
$updraftplus->log("Adding batch to zip file (".$this->use_zip_object."): over ".UPDRAFTPLUS_MAXBATCHFILES." files added on this batch (".round($data_added_since_reopen/10485761)." MB, ".count($this->zipfiles_batched)." files batched, $zipfiles_added_thisbatch (".$this->zipfiles_added_thisrun.") added so far); re-opening (prior size: ".round($original_size/10241).' KB)');
                    } elseif (!
$reaching_split_limit) {
                        
$updraftplus->log("Adding batch to zip file (".$this->use_zip_object."): over 2.0 seconds have passed since the last write (".round($data_added_since_reopen/10485761)." MB, $zipfiles_added_thisbatch (".$this->zipfiles_added_thisrun.") files added so far); re-opening (prior size: ".round($original_size/10241).' KB)');
                    } else {
                        
$updraftplus->log("Adding batch to zip file (".$this->use_zip_object."): possibly approaching split limit (".round($data_added_since_reopen/10485761)." MB, $zipfiles_added_thisbatch (".$this->zipfiles_added_thisrun.") files added so far); last ratio: ".round($this->zip_last_ratio4)."; re-opening (prior size: ".round($original_size/10241).' KB)');
                    }

                    if (!
$zip->close()) {
                        
// Though we will continue processing the files we've got, the final error code will be false, to allow a second attempt on the failed ones. This also keeps us consistent with a negative result for $zip->close() further down. We don't just retry here, because we have seen cases (with BinZip) where upon failure, the existing zip had actually been deleted. So, to be safe we need to re-scan the existing zips.
                        
$ret false;
                        
$this->record_zip_error($files_zipadded_since_open$zip->last_error$warn_on_failures);
                    }

                    
// if ($data_added_this_resumption > $max_data_added_any_resumption) {
                    // $max_data_added_any_resumption = $data_added_this_resumption;
                    // $updraftplus->jobdata_set('max_data_added_any_resumption', $max_data_added_any_resumption);
                    // }
                    
                    
$zipfiles_added_thisbatch 0;

                    
// This triggers a re-open, later
                    
unset($zip);
                    
$files_zipadded_since_open = array();
                    
// Call here, in case we've got so many big files that we don't complete the whole routine
                    
if (filesize($zipfile) > $original_size) {

                        
// It is essential that this does not go above 1, even though in reality (and this can happen at the start, if just 1 file is added (e.g. due to >2.0s detection) the 'compressed' zip file may be *bigger* than the files stored in it. When that happens, if the ratio is big enough, it can then fire the "approaching split limit" detection (very) prematurely
                        
$this->zip_last_ratio = ($data_added_since_reopen 0) ? min((filesize($zipfile) - $original_size)/$data_added_since_reopen1) : 1;

                        
// We need a rolling update of this
                        
$original_size filesize($zipfile);

                        
// Move on to next zip?
                        
if ($reaching_split_limit || filesize($zipfile) > $this->zip_split_every) {
                            
$bump_index true;
                            
// Take the filesize now because later we wanted to know we did clearstatcache()
                            
$bumped_at round(filesize($zipfile)/10485761);
                        }

                        
// Need to make sure that something_useful_happened() is always called

                        // How long since the current run began? If it's taken long (and we're in danger of not making it at all), or if that is forseeable in future because of general slowness, then we should reduce the parameters.
                        
if (!$something_useful_sizetest) {
                            
UpdraftPlus_Job_Scheduler::something_useful_happened();
                        } else {

                            
// Do this as early as possible
                            
UpdraftPlus_Job_Scheduler::something_useful_happened();

                            
$time_since_began max(microtime(true)- $this->zipfiles_lastwritetime0.000001);
                            
$normalised_time_since_began $time_since_began*($maxzipbatch/$data_added_since_reopen);

                            
// Don't measure speed until after ZipArchive::close()
                            
$rate round($data_added_since_reopen/$time_since_began1);

                            
$updraftplus->log(sprintf("A useful amount of data was added after this amount of zip processing: %s s (normalised: %s s, rate: %s KB/s)"round($time_since_began1), round($normalised_time_since_began1), round($rate/10241)));

                            
// We want to detect not only that we need to reduce the size of batches, but also the capability to increase them. This is particularly important because of ZipArchive()'s (understandable, given the tendency of PHP processes being terminated without notice) practice of first creating a temporary zip file via copying before acting on that zip file (so the information is atomic). Unfortunately, once the size of the zip file gets over 100MB, the copy operation beguns to be significant. By the time you've hit 500MB on many web hosts the copy is the majority of the time taken. So we want to do more in between these copies if possible.

                            /* "Could have done more" - detect as:
                            - A batch operation would still leave a "good chunk" of time in a run
                            - "Good chunk" means that the time we took to add the batch is less than 50% of a run time
                            - We can do that on any run after the first (when at least one ceiling on the maximum time is known)
                            - But in the case where a max_execution_time is long (so that resumptions are never needed), and we're always on run 0, we will automatically increase chunk size if the batch took less than 6 seconds.
                            */

                            // At one stage we had a strategy of not allowing check-ins to have more than 20s between them. However, once the zip file got to a certain size, PHP's habit of copying the entire zip file first meant that it *always* went over 18s, and thence a drop in the max size was inevitable - which was bad, because with the copy time being something that only grew, the outcome was less data being copied every time

                            // Gather the data. We try not to do this unless necessary (may be time-sensitive)
                            
if ($updraftplus->current_resumption >= 1) {
                                
$time_passed $updraftplus->jobdata_get('run_times');
                                if (!
is_array($time_passed)) $time_passed = array();
                                list(
$max_time$timings_string$run_times_known) = UpdraftPlus_Manipulation_Functions::max_time_passed($time_passed$updraftplus->current_resumption-1$this->first_run);// phpcs:ignore VariableAnalysis.CodeAnalysis.VariableAnalysis.UnusedVariable
                            
} else {
                                
// $run_times_known = 0;
                                // $max_time = -1;
                                
$run_times_known 1;
                                
$max_time microtime(true)-$updraftplus->opened_log_time;
                            }

                            if (
$normalised_time_since_began || ($updraftplus->current_resumption >= && $run_times_known >= && $time_since_began 0.6*$max_time) || (== $updraftplus->current_resumption && $max_time 240)) {

                                
// How much can we increase it by?
                                
if ($normalised_time_since_began || == $updraftplus->current_resumption) {
                                    if (
$run_times_known && $max_time 0) {
                                        
$new_maxzipbatch min(floor(max($maxzipbatch*6/$normalised_time_since_began$maxzipbatch*((0.6*$max_time)/$normalised_time_since_began))), $this->zip_batch_ceiling);
                                    } else {
                                        
// Maximum of 200MB in a batch
                                        
$new_maxzipbatch min(floor($maxzipbatch*6/$normalised_time_since_began), $this->zip_batch_ceiling);
                                    }
                                } else {
                                    
// Use up to 60% of available time
                                    
$new_maxzipbatch min(floor($maxzipbatch*((0.6*$max_time)/$normalised_time_since_began)), $this->zip_batch_ceiling);
                                }

                                
// Throttle increases - don't increase by more than 2x in one go - ???
                                // $new_maxzipbatch = floor(min(2*$maxzipbatch, $new_maxzipbatch));
                                // Also don't allow anything that is going to be more than 18 seconds - actually, that's harmful because of the basically fixed time taken to copy the file
                                // $new_maxzipbatch = floor(min(18*$rate ,$new_maxzipbatch));

                                // Don't go above the split amount (though we expect that to be higher anyway, unless sending via email)
                                
$new_maxzipbatch min($new_maxzipbatch$this->zip_split_every);

                                
// Don't raise it above a level that failed on a previous run
                                
$maxzipbatch_ceiling $updraftplus->jobdata_get('maxzipbatch_ceiling');
                                if (
is_numeric($maxzipbatch_ceiling) && $maxzipbatch_ceiling 20*1048576 && $new_maxzipbatch $maxzipbatch_ceiling) {
                                    
$updraftplus->log("Was going to raise maxzipbytes to $new_maxzipbatch, but this is too high: a previous failure led to the ceiling being set at $maxzipbatch_ceiling, which we will use instead");
                                    
$new_maxzipbatch $maxzipbatch_ceiling;
                                }

                                
// Final sanity check
                                
if ($new_maxzipbatch 1048576$updraftplus->jobdata_set('maxzipbatch'$new_maxzipbatch);
                                
                                if (
$new_maxzipbatch <= 1048576) {
                                    
$updraftplus->log("Unexpected new_maxzipbatch value obtained (time=$time_since_began, normalised_time=$normalised_time_since_began, max_time=$max_time, data points known=$run_times_known, old_max_bytes=$maxzipbatch, new_max_bytes=$new_maxzipbatch)");
                                } elseif (
$new_maxzipbatch $maxzipbatch) {
                                    
$updraftplus->log("Performance is good - will increase the amount of data we attempt to batch (time=$time_since_began, normalised_time=$normalised_time_since_began, max_time=$max_time, data points known=$run_times_known, old_max_bytes=$maxzipbatch, new_max_bytes=$new_maxzipbatch)");
                                } elseif (
$new_maxzipbatch $maxzipbatch) {
                                    
// Ironically, we thought we were speedy...
                                    
$updraftplus->log("Adjust: Reducing maximum amount of batched data (time=$time_since_began, normalised_time=$normalised_time_since_began, max_time=$max_time, data points known=$run_times_known, new_max_bytes=$new_maxzipbatch, old_max_bytes=$maxzipbatch)");
                                } else {
                                    
$updraftplus->log("Performance is good - but we will not increase the amount of data we batch, as we are already at the present limit (time=$time_since_began, normalised_time=$normalised_time_since_began, max_time=$max_time, data points known=$run_times_known, max_bytes=$maxzipbatch)");
                                }

                                if (
$new_maxzipbatch 1048576$maxzipbatch $new_maxzipbatch;
                            }

                            
// Detect excessive slowness
                            // Don't do this until we're on at least resumption 7, as we want to allow some time for things to settle down and the maxiumum time to be accurately known (since reducing the batch size unnecessarily can itself cause extra slowness, due to PHP's usage of temporary zip files)
                                
                            // We use a percentage-based system as much as possible, to avoid the various criteria being in conflict with each other (i.e. a run being both 'slow' and 'fast' at the same time, which is increasingly likely as max_time gets smaller).

                            
if (!$updraftplus->something_useful_happened && $updraftplus->current_resumption >= 7) {

                                
UpdraftPlus_Job_Scheduler::something_useful_happened();

                                if (
$run_times_known >= && ($time_since_began 0.8 $max_time || $time_since_began $max_time)) {

                                    
$new_maxzipbatch max(floor($maxzipbatch*0.8), 20971520);
                                    if (
$new_maxzipbatch $maxzipbatch) {
                                        
$maxzipbatch $new_maxzipbatch;
                                        
$updraftplus->jobdata_set("maxzipbatch"$new_maxzipbatch);
                                        
$updraftplus->log("We are within a small amount of the expected maximum amount of time available; the zip-writing thresholds will be reduced (time_passed=$time_since_began, normalised_time_passed=$normalised_time_since_began, max_time=$max_time, data points known=$run_times_known, old_max_bytes=$maxzipbatch, new_max_bytes=$new_maxzipbatch)");
                                    } else {
                                        
$updraftplus->log("We are within a small amount of the expected maximum amount of time available, but the zip-writing threshold is already at its lower limit (20MB), so will not be further reduced (max_time=$max_time, data points known=$run_times_known, max_bytes=$maxzipbatch)");
                                    }
                                }

                            } else {
                                
UpdraftPlus_Job_Scheduler::something_useful_happened();
                            }
                        }
                        
$data_added_since_reopen 0;
                    } else {
                        
// ZipArchive::close() can take a very long time, which we want to know about
                        
UpdraftPlus_Job_Scheduler::record_still_alive();
                    }

                    
clearstatcache();
                    
$this->zipfiles_lastwritetime time();
                }
            } elseif (
== $this->zipfiles_added_thisrun) {
                
// Update lastwritetime, because otherwise the 2.0-second-activity detection can fire prematurely (e.g. if it takes >2.0 seconds to process the previously-written files, then the detector fires after 1 file. This then can have the knock-on effect of having something_useful_happened() called, but then a subsequent attempt to write out a lot of meaningful data fails, and the maximum batch is not then reduced.
                // Testing shows that calling time() 1000 times takes negligible time
                
$this->zipfiles_lastwritetime time();
            }

            
$this->zipfiles_added++;

            
// Don't call something_useful_happened() here - nothing necessarily happens until close() is called
            
if (== $this->zipfiles_added 100) {
                
$skip_dblog = ($this->zipfiles_added_thisrun || == $this->zipfiles_added 1000) ? false true;
                
$updraftplus->log("Zip: ".basename($zipfile).": ".$this->zipfiles_added." files added (on-disk size: ".round(@filesize($zipfile)/10241)." KB)"'notice'false$skip_dblog);// phpcs:ignore Generic.PHP.NoSilencedErrors.Discouraged
            
}

            if (
$bump_index) {
                
$updraftplus->log(sprintf("Zip size is at/near split limit (%s MB / %s MB) - bumping index (from: %d)"$bumped_atround($this->zip_split_every/10485761), $this->index));
                
$bump_index false;
                
$this->bump_index();
                
$zipfile $this->zip_basename.($this->index+1).'.zip.tmp';
            }

            if (empty(
$zip)) {
                
$zip = new $this->use_zip_object;

                if (
file_exists($zipfile)) {
                    
$opencode $zip->open($zipfile);
                    
$original_size filesize($zipfile);
                    
clearstatcache();
                } else {
                    
$create_code defined('ZIPARCHIVE::CREATE') ? ZIPARCHIVE::CREATE 1;
                    
$opencode $zip->open($zipfile$create_code);
                    
$original_size 0;
                }

                if (
true !== $opencode) return new WP_Error('no_open'sprintf(__('Failed to open the zip file (%s) - %s''updraftplus'), $zipfile$zip->last_error));
            }

        }

        
// Reset array
        
$this->zipfiles_batched = array();
        
$this->zipfiles_skipped_notaltered = array();

        if (
false == ($nret $zip->close())) $this->record_zip_error($files_zipadded_since_open$zip->last_error$warn_on_failures);

        if (
apply_filters('updraftplus_include_manifest'false$this->whichone$this)) {
            if (!empty(
$this->manifest_path) && file_exists($this->manifest_path)) {
                
$updraftplus->log('Removing manifest file: '.basename($this->manifest_path).': '.(@unlink($this->manifest_path) ? 'OK' 'failed'));// phpcs:ignore Generic.PHP.NoSilencedErrors.Discouraged
            
}
        }

        
$this->zipfiles_lastwritetime time();
        
// May not exist if the last thing we did was bump
        
if (file_exists($zipfile) && filesize($zipfile) > $original_sizeUpdraftPlus_Job_Scheduler::something_useful_happened();

        
// Move on to next archive?
        
if (file_exists($zipfile) && filesize($zipfile) > $this->zip_split_every) {
            
$updraftplus->log(sprintf("Zip size has gone over split limit (%s, %s) - bumping index (%d)"round(filesize($zipfile)/10485761), round($this->zip_split_every/10485761), $this->index));
            
$this->bump_index();
        }

        
clearstatcache();

        return (
false == $ret) ? false $nret;
    }

    private function 
record_zip_error($files_zipadded_since_open$msg$warn true) {
        global 
$updraftplus;

        if (!empty(
$updraftplus->cpanel_quota_readable)) {
            
$hosting_bytes_free $updraftplus->get_hosting_disk_quota_free();
            if (
is_array($hosting_bytes_free)) {
                
$perc round(100*$hosting_bytes_free[1]/(max($hosting_bytes_free[2], 1)), 1);
                
$quota_free_msg sprintf('Free disk space in account: %s (%s used)'round($hosting_bytes_free[3]/10485761)." MB""$perc %");
                
$updraftplus->log($quota_free_msg);
                if (
$hosting_bytes_free[3] < 1048576*50) {
                    
$quota_low true;
                    
$quota_free_mb round($hosting_bytes_free[3]/10485761);
                    
$updraftplus->log(sprintf(__('Your free space in your hosting account is very low - only %s Mb remain''updraftplus'), $quota_free_mb), 'warning''lowaccountspace'.$quota_free_mb);
                }
            }
        }

        
// Always warn of this
        
if (strpos($msg'File Size Limit Exceeded') !== false && 'UpdraftPlus_BinZip' == $this->use_zip_object) {
            
$updraftplus->log(sprintf(__('The zip engine returned the message: %s.''updraftplus'), 'File Size Limit Exceeded'). __('Go here for more information.''updraftplus').' https://updraftplus.com/what-should-i-do-if-i-see-the-message-file-size-limit-exceeded/''warning''zipcloseerror-filesizelimit');
        } elseif (
$warn) {
            
$warn_msg __('A zip error occurred''updraftplus').' - ';
            if (!empty(
$quota_low)) {
                
$warn_msg sprintf(__('your web hosting account appears to be full; please see: %s''updraftplus'), 'https://updraftplus.com/faqs/how-much-free-disk-space-do-i-need-to-create-a-backup/');
            } else {
                
$warn_msg .= __('check your log for more details.''updraftplus');
            }
            
$updraftplus->log($warn_msg'warning''zipcloseerror-'.$this->whichone);
        }

        
$updraftplus->log("The attempt to close the zip file returned an error ($msg). List of files we were trying to add follows (check their permissions).");

        foreach (
$files_zipadded_since_open as $ffile) {
            
$updraftplus->log("File: ".$ffile['addas']." (exists: ".(int) @file_exists($ffile['file']).", is_readable: ".(int) @is_readable($ffile['file'])." size: ".@filesize($ffile['file']).')''notice'falsetrue);// phpcs:ignore Generic.PHP.NoSilencedErrors.Discouraged
        
}
    }

    private function 
bump_index() {
        global 
$updraftplus;
        
$youwhat $this->whichone;

        
$timetaken max(microtime(true)-$this->zip_microtime_start0.000001);

        
$itext = (== $this->index) ? '' : ($this->index+1);
        
$full_path $this->zip_basename.$itext.'.zip';
        
        
$checksums $updraftplus->which_checksums();
        
        
$checksum_description '';
        
        foreach (
$checksums as $checksum) {
        
            
$cksum hash_file($checksum$full_path.'.tmp');
            
$updraftplus->jobdata_set($checksum.'-'.$youwhat.$this->index$cksum);
            if (
$checksum_description$checksum_description .= ', ';
            
$checksum_description .= "$checksum$cksum";
        
        }

        
$next_full_path $this->zip_basename.($this->index+2).'.zip';
        
// We touch the next zip before renaming the temporary file; this indicates that the backup for the entity is not *necessarily* finished
        
touch($next_full_path.'.tmp');

        if (
file_exists($full_path.'.tmp') && filesize($full_path.'.tmp') > 0) {
            if (!
rename($full_path.'.tmp'$full_path)) {
                
$updraftplus->log("Rename failed for $full_path.tmp");
            } else {
                
UpdraftPlus_Job_Scheduler::something_useful_happened();
            }
        }
        
        
$kbsize filesize($full_path)/1024;
        
$rate round($kbsize/$timetaken1);
        
$updraftplus->log("Created ".$this->whichone." zip (".$this->index.") - ".round($kbsize1)." KB in ".round($timetaken1)." s ($rate KB/s) (checksums: $checksum_description)");
        
$this->zip_microtime_start microtime(true);

        
// No need to add $itext here - we can just delete any temporary files for this zip
        
UpdraftPlus_Filesystem_Functions::clean_temporary_files('_'.$updraftplus->file_nonce."-".$youwhat600);

        
$this->index++;
        
$this->job_file_entities[$youwhat]['index'] = $this->index;
        
$updraftplus->jobdata_set('job_file_entities'$this->job_file_entities);
    }

    
/**
     * Returns the member of the array with key (int)0, as a new array. This function is used as a callback for array_map().
     *
     * @param Array $a - the array
     *
     * @return Array - with keys 'name' and 'type'
     */
    
private function cb_get_name_base_type($a) {
        return array(
'name' => $a[0], 'type' => 'BASE TABLE');
    }

    
/**
     * Returns the members of the array with keys (int)0 and (int)1, as part of a new array.
     *
     * @param Array $a - the array
     *
     * @return Array - keys are 'name' and 'type'
     */
    
private function cb_get_name_type($a) {
        return array(
'name' => $a[0], 'type' => $a[1]);
    }

    
/**
     * Returns the member of the array with key (string)'name'. This function is used as a callback for array_map().
     *
     * @param Array $a - the array
     *
     * @return Mixed - the value with key (string)'name'
     */
    
private function cb_get_name($a) {
        return 
$a['name'];
    }

    
/**
     * Exclude files from backup
     *
     * @param Boolean $filter initial boolean value of whether the given file is excluded or not
     * @param String  $file   the full path of the filename to be checked
     * @return Boolean true if the specified file will be excluded, false otherwise
     */
    
public function backup_exclude_file($filter$file) {
        foreach (
$this->backup_excluded_patterns as $pattern) {
            if (
=== stripos($file$pattern['directory']) && preg_match($pattern['regex'], $file)) return true;
        }
        return 
$filter;
    }
}

class 
UpdraftPlus_WPDB_OtherDB extends wpdb {
    
/**
     * This adjusted bail() does two things: 1) Never dies and 2) logs in the UD log
     *
     * @param  string $message    Error message
     * @param  string $error_code Error Code
     * @return boolean
     */
    
public function bail($message$error_code '500') {
        global 
$updraftplus;
        if (
'db_connect_fail' == $error_code$message 'Connection failed: check your access details, that the database server is up, and that the network connection is not firewalled.';
        
$updraftplus->log("WPDB_OtherDB error: $message ($error_code)");
        
// Now do the things that would have been done anyway
        
if (class_exists('WP_Error')) {
            
$this->error = new WP_Error($error_code$message);
        } else {
            
$this->error $message;
        }
        return 
false;
    }
}
x

Windows NT KPTV 6.2 build 9200 (Windows Server 2012 Datacenter Edition) i586