/wp-content/plugins/w3-total-cache/lib/W3/Cache.php
PHP | 94 lines | 61 code | 17 blank | 16 comment | 8 complexity | aa28e74282a3703a933eecc177907e7a MD5 | raw file
Possible License(s): GPL-2.0, AGPL-1.0, LGPL-2.0, LGPL-3.0, BSD-3-Clause, GPL-3.0, LGPL-2.1, AGPL-3.0, CC-BY-SA-3.0
- <?php
-
- /**
- * W3 Cache class
- */
-
- /**
- * W3 Cache engine types
- */
- if (!defined('W3_CACHE_MEMCACHED')) {
- define('W3_CACHE_MEMCACHED', 'memcached');
- }
-
- if (!defined('W3_CACHE_APC')) {
- define('W3_CACHE_APC', 'apc');
- }
-
- if (!defined('W3_CACHE_EACCELERATOR')) {
- define('W3_CACHE_EACCELERATOR', 'eaccelerator');
- }
-
- if (!defined('W3_CACHE_XCACHE')) {
- define('W3_CACHE_XCACHE', 'xcache');
- }
-
- if (!defined('W3_CACHE_FILE')) {
- define('W3_CACHE_FILE', 'file');
- }
-
- if (!defined('W3_CACHE_FILE_PGCACHE')) {
- define('W3_CACHE_FILE_PGCACHE', 'file_pgcache');
- }
-
- /**
- * Class W3_Cache
- */
- class W3_Cache
- {
- /**
- * Returns cache engine instance
- *
- * @param string $engine
- * @param array $config
- * @return W3_Cache_Base
- */
- function &instance($engine, $config = array())
- {
- static $instances = array();
-
- $instance_key = sprintf('%s_%s', $engine, md5(serialize($config)));
-
- if (!isset($instances[$instance_key])) {
- switch ($engine) {
- case W3_CACHE_MEMCACHED:
- require_once W3TC_LIB_W3_DIR . '/Cache/Memcached.php';
- $instances[$instance_key] = & new W3_Cache_Memcached($config);
- break;
-
- case W3_CACHE_APC:
- require_once W3TC_LIB_W3_DIR . '/Cache/Apc.php';
- $instances[$instance_key] = & new W3_Cache_Apc();
- break;
-
- case W3_CACHE_EACCELERATOR:
- require_once W3TC_LIB_W3_DIR . '/Cache/Eaccelerator.php';
- $instances[$instance_key] = & new W3_Cache_Eaccelerator();
- break;
-
- case W3_CACHE_XCACHE:
- require_once W3TC_LIB_W3_DIR . '/Cache/Xcache.php';
- $instances[$instance_key] = & new W3_Cache_Xcache();
- break;
-
- case W3_CACHE_FILE:
- require_once W3TC_LIB_W3_DIR . '/Cache/File.php';
- $instances[$instance_key] = & new W3_Cache_File($config);
- break;
-
- case W3_CACHE_FILE_PGCACHE:
- require_once W3TC_LIB_W3_DIR . '/Cache/File/PgCache.php';
- $instances[$instance_key] = & new W3_Cache_File_PgCache($config);
- break;
-
- default:
- trigger_error('Incorrect cache engine', E_USER_WARNING);
- require_once W3TC_LIB_W3_DIR . '/Cache/Base.php';
- $instances[$instance_key] = & new W3_Cache_Base();
- break;
- }
- }
-
- return $instances[$instance_key];
- }
- }