JezK
Edit File: autoptimize_404_handler.php
<?php /** * 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 = '/home/www/wp-content/cache/autoptimize/'; $js_or_css = pathinfo( $original_request, PATHINFO_EXTENSION ); // add multisite logic. $multisite = false; if ( true === $multisite ) { preg_match( '#\/([0-9]{1,5})\/(?:js|css)\/[a-z0-9]*_fallback\.(?:js|css)$#', $fallback_target, $child_site_id ); $ao_root_cache_dir = preg_replace( '#[0-9]*\/$#', '', $ao_cache_dir ); $ao_cache_dir = $ao_root_cache_dir . $child_site_id[1] . '/'; } $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();