| 1 |
<?php |
| 2 |
/* |
| 3 |
* Plugin Name: OPcache Reset |
| 4 |
* Plugin URI: http://wordpress.org/plugins/opcache-reset/ |
| 5 |
* Description: Automatic reset of OPcache |
| 6 |
* Version: 2.2.0 |
| 7 |
* Author: Danila Vershinin |
| 8 |
* Author URI: https://www.getpagespeed.com/ |
| 9 |
* License: GPL2 |
| 10 |
* License URI: https://www.gnu.org/licenses/gpl-2.0.html |
| 11 |
*/ |
| 12 |
|
| 13 |
// Make sure we don't expose any info if called directly |
| 14 |
if ( !function_exists( 'add_action' ) ) { |
| 15 |
echo 'Hi there! I\'m just a plugin, not much I can do when called directly.'; |
| 16 |
exit; |
| 17 |
} |
| 18 |
|
| 19 |
if ( is_admin() ) { |
| 20 |
if (! (defined( 'DOING_AJAX' ) && DOING_AJAX)) { |
| 21 |
// We are in admin mode: notices and such are handled here |
| 22 |
require_once(__DIR__ . '/opcache-admin.php'); |
| 23 |
} |
| 24 |
} |
| 25 |
|
| 26 |
/** |
| 27 |
* Reset OPCache using different approach depending on the caller context (e.g. cron vs. web) |
| 28 |
*/ |
| 29 |
function gps_opcache_reset() { |
| 30 |
|
| 31 |
if( ! function_exists('opcache_reset') ) { |
| 32 |
// Bail if extension is not loaded |
| 33 |
return; |
| 34 |
} |
| 35 |
|
| 36 |
|
| 37 |
if (empty( ini_get( 'opcache.enable' ))) { |
| 38 |
// Do not try doing anything if OPcache is loaded but disabled |
| 39 |
return; |
| 40 |
} |
| 41 |
|
| 42 |
if ( ! empty( ini_get( 'opcache.restrict_api' ) ) && strpos( __FILE__, ini_get( 'opcache.restrict_api' ) ) !== 0 ) { |
| 43 |
return; |
| 44 |
} |
| 45 |
|
| 46 |
// https://www.getpagespeed.com/server-setup/php/zend-opcache |
| 47 |
// Follow the principles of reliable file cache clearing from this article |
| 48 |
$fileCacheDir = ini_get( 'opcache.file_cache' ); |
| 49 |
// Check if file cache is enabled and delete it if enabled |
| 50 |
if ( $fileCacheDir && is_writable( $fileCacheDir ) ) { |
| 51 |
// check if we can create subdirectory in the parent directory. |
| 52 |
// Normally, it's ~/.cache so we can |
| 53 |
$cacheDir = dirname($fileCacheDir); |
| 54 |
if (! is_writable($cacheDir)) { |
| 55 |
$fileCacheDir = null; |
| 56 |
} |
| 57 |
} |
| 58 |
|
| 59 |
if ($fileCacheDir && file_exists($fileCacheDir)) { |
| 60 |
// move it out of the way to avoid race conditions |
| 61 |
shell_exec("mv ${fileCacheDir} ${fileCacheDir}.rm"); |
| 62 |
} |
| 63 |
|
| 64 |
// We are in PHP-FPM context and not file cache only |
| 65 |
if (php_sapi_name() !== 'cli' && ! ini_get( 'opcache.file_cache_only' )) { |
| 66 |
opcache_reset(); |
| 67 |
} |
| 68 |
|
| 69 |
if ($fileCacheDir) { |
| 70 |
if ( file_exists( "${fileCacheDir}.rm" )) { |
| 71 |
shell_exec( "rm -rf ${fileCacheDir}.rm" ); |
| 72 |
} |
| 73 |
// make sure OPcache directory is re-created |
| 74 |
shell_exec( "mkdir -p ${fileCacheDir}" ); |
| 75 |
} |
| 76 |
|
| 77 |
// Irrespective of the context, we should attempt to clear the memory-based OPCache, because this script may be called from CLI |
| 78 |
// and can't be aware of whether PHP-FPM is running with file_cache_only => On |
| 79 |
// Since the script may be called via cron or PHP-FPM with clear_env settings, the PATH may not be set properly, so we need to set it |
| 80 |
$username = getenv('USER'); |
| 81 |
$path = "/home/${username}/.local/bin:/usr/bin:/bin"; |
| 82 |
$systemPath = getenv('PATH'); |
| 83 |
if ($systemPath) { |
| 84 |
$path .= ':' . $systemPath; |
| 85 |
} |
| 86 |
$cmd = 'php -d opcache.enable_cli=0 -d opcache.file_cache_only=0 -d opcache.file_cache=/tmp $(which cachetool) opcache:reset'; |
| 87 |
// Run cachetool with the adjusted PATH |
| 88 |
shell_exec("PATH=${path} ${cmd} 2>&1"); |
| 89 |
} |
| 90 |
|
| 91 |
|
| 92 |
add_action( 'upgrader_process_complete', 'gps_opcache_reset', PHP_INT_MAX - 1, 2 ); |
| 93 |
|
| 94 |
|
| 95 |
|
| 96 |
|
