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<?php
/**
* Plugin Name: AMP
* Description: Enable AMP on your WordPress site, the WordPress way.
* Plugin URI: https://amp-wp.org
* Author: AMP Project Contributors
* Author URI: https://github.com/ampproject/amp-wp/graphs/contributors
* Version: 2.0.10
* License: GPLv2 or later
* Requires at least: 4.9
* Requires PHP: 5.6
*
* @package AMP
*/
define( 'AMP__FILE__', __FILE__ );
define( 'AMP__DIR__', dirname( __FILE__ ) );
define( 'AMP__VERSION', '2.0.10' );
/**
* Errors encountered while loading the plugin.
*
* This has to be a global for the sake of PHP 5.2.
*
* @var WP_Error $_amp_load_errors
*/
global $_amp_load_errors;
$_amp_load_errors = new WP_Error();
if ( version_compare( phpversion(), '5.6', '<' ) ) {
$_amp_load_errors->add(
'insufficient_php_version',
sprintf(
/* translators: %s: required PHP version */
__( 'The AMP plugin requires PHP %s. Please contact your host to update your PHP version.', 'amp' ),
'5.6+'
)
);
}
// See composer.json for this list.
$_amp_required_extensions = array(
// Required by FasterImage.
'curl' => array(
'functions' => array(
'curl_close',
'curl_errno',
'curl_error',
'curl_exec',
'curl_getinfo',
'curl_init',
'curl_setopt',
),
),
'dom' => array(
'classes' => array(
'DOMAttr',
'DOMComment',
'DOMDocument',
'DOMElement',
'DOMNode',
'DOMNodeList',
'DOMXPath',
),
),
// Required by PHP-CSS-Parser.
'iconv' => array(
'functions' => array( 'iconv' ),
),
'libxml' => array(
'functions' => array( 'libxml_use_internal_errors' ),
),
'spl' => array(
'functions' => array( 'spl_autoload_register' ),
),
);
$_amp_missing_extensions = array();
$_amp_missing_classes = array();
$_amp_missing_functions = array();
foreach ( $_amp_required_extensions as $_amp_required_extension => $_amp_required_constructs ) {
if ( ! extension_loaded( $_amp_required_extension ) ) {
$_amp_missing_extensions[] = "<code>$_amp_required_extension</code>";
} else {
foreach ( $_amp_required_constructs as $_amp_construct_type => $_amp_constructs ) {
switch ( $_amp_construct_type ) {
case 'functions':
foreach ( $_amp_constructs as $_amp_construct ) {
if ( ! function_exists( $_amp_construct ) ) {
$_amp_missing_functions[] = "<code>$_amp_construct</code>";
}
}
break;
case 'classes':
foreach ( $_amp_constructs as $_amp_construct ) {
if ( ! class_exists( $_amp_construct ) ) {
$_amp_missing_classes[] = "<code>$_amp_construct</code>";
}
}
break;
}
}
unset( $_amp_construct_type, $_amp_constructs );
}
}
if ( count( $_amp_missing_extensions ) > 0 ) {
$_amp_load_errors->add(
'missing_extension',
sprintf(
/* translators: %s is list of missing extensions */
_n(
'The following PHP extension is missing: %s. Please contact your host to finish installation.',
'The following PHP extensions are missing: %s. Please contact your host to finish installation.',
count( $_amp_missing_extensions ),
'amp'
),
implode( ', ', $_amp_missing_extensions )
)
);
}
if ( count( $_amp_missing_classes ) > 0 ) {
$_amp_load_errors->add(
'missing_class',
sprintf(
/* translators: %s is list of missing extensions */
_n(
'The following PHP class is missing: %s. Please contact your host to finish installation.',
'The following PHP classes are missing: %s. Please contact your host to finish installation.',
count( $_amp_missing_classes ),
'amp'
),
implode( ', ', $_amp_missing_classes )
)
);
}
if ( count( $_amp_missing_functions ) > 0 ) {
$_amp_load_errors->add(
'missing_class',
sprintf(
/* translators: %s is list of missing extensions */
_n(
'The following PHP function is missing: %s. Please contact your host to finish installation.',
'The following PHP functions are missing: %s. Please contact your host to finish installation.',
count( $_amp_missing_functions ),
'amp'
),
implode( ', ', $_amp_missing_functions )
)
);
}
unset( $_amp_required_extensions, $_amp_missing_extensions, $_amp_required_constructs, $_amp_missing_classes, $_amp_missing_functions, $_amp_required_extension, $_amp_construct_type, $_amp_construct, $_amp_constructs );
/**
* Displays an admin notice about why the plugin is unable to load.
*
* @since 1.1.2
* @internal
* @global WP_Error $_amp_load_errors
*/
function _amp_show_load_errors_admin_notice() {
global $_amp_load_errors;
?>
<div class="notice notice-error">
<p>
<strong><?php esc_html_e( 'AMP plugin unable to initialize.', 'amp' ); ?></strong>
<ul>
<?php foreach ( array_keys( $_amp_load_errors->errors ) as $error_code ) : ?>
<?php foreach ( $_amp_load_errors->get_error_messages( $error_code ) as $message ) : ?>
<li>
<?php echo wp_kses_post( $message ); ?>
</li>
<?php endforeach; ?>
<?php endforeach; ?>
</ul>
</p>
</div>
<?php
}
// Abort if dependencies are not satisfied.
if ( ! empty( $_amp_load_errors->errors ) ) {
add_action( 'admin_notices', '_amp_show_load_errors_admin_notice' );
if ( ( defined( 'WP_CLI' ) && WP_CLI ) || 'true' === getenv( 'CI' ) || 'cli' === PHP_SAPI ) {
$messages = array( __( 'AMP plugin unable to initialize.', 'amp' ) );
foreach ( array_keys( $_amp_load_errors->errors ) as $error_code ) {
$messages = array_merge( $messages, $_amp_load_errors->get_error_messages( $error_code ) );
}
$message = implode( "\n * ", $messages );
$message = str_replace( array( '<code>', '</code>' ), '`', $message );
$message = html_entity_decode( $message, ENT_QUOTES, 'UTF-8' );
if ( ! class_exists( 'WP_CLI' ) ) {
echo "$message\n"; // phpcs:disable WordPress.Security.EscapeOutput.OutputNotEscaped
exit( 1 );
}
WP_CLI::warning( $message );
}
return;
}
/**
* Print admin notice if plugin installed with incorrect slug (which impacts WordPress's auto-update system).
*
* @since 1.0
* @internal
*/
function _amp_incorrect_plugin_slug_admin_notice() {
$actual_slug = basename( AMP__DIR__ );
?>
<div class="notice notice-warning">
<p>
<?php
echo wp_kses_post(
sprintf(
/* translators: %1$s is the current directory name, and %2$s is the required directory name */
__( 'You appear to have installed the AMP plugin incorrectly. It is currently installed in the <code>%1$s</code> directory, but it needs to be placed in a directory named <code>%2$s</code>. Please rename the directory. This is important for WordPress plugin auto-updates.', 'amp' ),
$actual_slug,
'amp'
)
);
?>
</p>
</div>
<?php
}
if ( 'amp' !== basename( AMP__DIR__ ) ) {
add_action( 'admin_notices', '_amp_incorrect_plugin_slug_admin_notice' );
}
require_once AMP__DIR__ . '/vendor/autoload.php';
register_activation_hook( __FILE__, 'amp_activate' );
register_deactivation_hook( __FILE__, 'amp_deactivate' );
add_action( 'plugins_loaded', 'amp_bootstrap_plugin', defined( 'PHP_INT_MIN' ) ? PHP_INT_MIN : ~PHP_INT_MAX ); // phpcs:ignore PHPCompatibility.Constants.NewConstants.php_int_minFound
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