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<?php exit;
/**
* Autoptimize's magic 404 handler.
*
* Configure your webserver to have requests for files that are no longer in
* /wp-content/cache/autoptimize/ to redirect to this file. AO's .htaccess file
* will have a "Errordocument:" directive to automatically do this.
*
* This file has simple logic to redirect to the "fallback" files that are
* created automatically by AO to avoid visitors seeing broken pages or
* Googlebot getting utterly confused.
*
* Error logging is off by default (don't want to flood your php errorlog, but
* can be enabled by this code snippet:
*
* add_filter( 'autoptimize_filter_cache_fallback_log_errors', '__return_true' );
*
* Warning: the fallback files might not apply to all pages, so this is a just
* a temporary solution, you really should clear any page cache to avoid requests
* to files that don't exist in AO's cache.
*/
$original_request = strtok( $_SERVER['REQUEST_URI'], '?' );
if ( strpos( $original_request, 'uucss/uucss-' ) !== false ) {
$original_request = preg_replace( '/uucss\/uucss-[a-z0-9]{32}-/', 'css/', $original_request );
}
$fallback_target = preg_replace( '/(.*)_(?:[a-z0-9]{32})\.(js|css)$/', '${1}_fallback.${2}', $original_request );
$ao_cache_dir = '<!--ao-cache-dir-->';
$js_or_css = pathinfo( $original_request, PATHINFO_EXTENSION );
$fallback_path = $ao_cache_dir . $js_or_css . '/autoptimize_fallback.' . $js_or_css;
if ( $original_request !== $fallback_target && file_exists( $fallback_path ) ) {
// error_log( 'Autoptimize file ' . $original_request . ' not found, using fallback instead.' );
header( 'HTTP/1.1 301 Moved Permanently' );
header( 'Location: ' . $fallback_target );
} else {
// error_log( 'Autoptimize file ' . $original_request . ' not found, sending 410 gone response.' );
header( 'HTTP/1.1 410 Gone' );
}
exit();
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