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<?php |
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/* |
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* Plugin Name: OPcache Reset |
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* Plugin URI: http://wordpress.org/plugins/opcache-reset/ |
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* Description: Automatic reset of OPcache |
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* Version: 2.1.8 |
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* Author: Danila Vershinin |
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* Author URI: https://www.getpagespeed.com/ |
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* License: GPL2 |
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* License URI: https://www.gnu.org/licenses/gpl-2.0.html |
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*/ |
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|
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// Make sure we don't expose any info if called directly |
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if ( !function_exists( 'add_action' ) ) { |
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echo 'Hi there! I\'m just a plugin, not much I can do when called directly.'; |
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exit; |
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} |
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|
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if ( is_admin() ) { |
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if (! (defined( 'DOING_AJAX' ) && DOING_AJAX)) { |
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// We are in admin mode: notices and such are handled here |
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require_once(__DIR__ . '/opcache-admin.php'); |
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} |
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} |
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|
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/** |
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* Reset OPCache using different approach depending on the caller context (e.g. cron vs. web) |
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*/ |
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function gps_opcache_reset() { |
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|
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if( ! function_exists('opcache_reset') ) { |
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// Bail if extension is not loaded |
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return; |
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} |
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|
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|
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if (empty( ini_get( 'opcache.enable' ))) { |
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// Do not try doing anything if OPcache is loaded but disabled |
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return; |
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} |
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|
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if ( ! empty( ini_get( 'opcache.restrict_api' ) ) && strpos( __FILE__, ini_get( 'opcache.restrict_api' ) ) !== 0 ) { |
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return; |
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} |
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|
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// https://www.getpagespeed.com/server-setup/php/zend-opcache |
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// Follow the principles of reliable file cache clearing from this article |
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$fileCacheDir = ini_get( 'opcache.file_cache' ); |
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|
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// File cache dir may be set for CLI only, so let's check it |
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if ( ! $fileCacheDir ) { |
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$cmd_ini_get = "echo ini_get('opcache.file_cache');"; |
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// Use the PHP wrapper in local bin, see how we like to to put ~./local/bin/php as a specific PHP with different file OPCache settings |
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// https://www.getpagespeed.com/server-setup/php/faster-php-cli-and-cron-jobs |
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$cmd_ini_get = 'PATH=$HOME/.local/bin:$PATH php -r ' . '"' . $cmd_ini_get . '"'; |
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$fileCacheDir = trim(shell_exec($cmd_ini_get)); |
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} |
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|
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// Check if file cache is enabled and delete it if enabled |
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if ( $fileCacheDir && is_writable( $fileCacheDir ) ) { |
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// check if we can create subdirectory in the parent directory. |
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// Normally, it's ~/.cache so we can |
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$cacheDir = dirname($fileCacheDir); |
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if (! is_writable($cacheDir)) { |
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$fileCacheDir = null; |
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} |
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} |
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|
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if ($fileCacheDir && file_exists($fileCacheDir)) { |
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// move it out of the way to avoid race conditions |
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shell_exec("mv ${fileCacheDir} ${fileCacheDir}.rm"); |
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} |
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|
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// We are in PHP-FPM context and not file cache only |
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if (php_sapi_name() !== 'cli' && ! ini_get( 'opcache.file_cache_only' )) { |
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opcache_reset(); |
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} |
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|
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if ($fileCacheDir) { |
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// if file cache only, do not use opcache:reset as it cannot clear file caches and yield error in such case |
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if (! ini_get( 'opcache.file_cache_only' )) { |
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shell_exec('php -d opcache.enable_cli=0 -d opcache.file_cache=/tmp $(which cachetool) opcache:reset'); |
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} |
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if ( file_exists( "${fileCacheDir}.rm" )) { |
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shell_exec( "rm -rf ${fileCacheDir}.rm" ); |
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} |
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// make sure OPcache directory is re-created |
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shell_exec( "mkdir -p ${fileCacheDir}" ); |
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} |
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|
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} |
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|
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add_action( 'upgrader_process_complete', 'gps_opcache_reset', PHP_INT_MAX - 1, 2 ); |
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