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memcached.php
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<?php
/**
* Memcached cache.
*
* Zed. The immensity of stars. The HyperShip. The people.
*
* (c) 2010, Dereckson, some rights reserved.
* Released under BSD license.
*
* Cache class: memcached
*
* 0.1 2010-07-06 22:55 Initial version [DcK]
*
* @package Zed
* @subpackage Cache
* @author Sébastien Santoro aka Dereckson <dereckson@espace-win.org>
* @copyright 2010 Sébastien Santoro aka Dereckson
* @license http://www.opensource.org/licenses/bsd-license.php BSD
* @version 0.1
* @link http://scherzo.dereckson.be/doc/zed
* @link http://zed.dereckson.be/
* @filesource
*/
/**
* Memcached cache
*
* !!! This class uses the Memcached extension AND NOT the Memcache ext !!!!
*
* References:
* @link http://www.php.net/manual/en/book/memcached.php
* @link http://memcached.org
*
* This class implements a singleton pattern.
*/
class CacheMemcached {
/**
* The current cache instance
*
* @var CacheMemcached
*/
static $instance = null;
/**
* The Memcached object
*
* @var Memcached
*/
private $memcached = null;
/**
* Gets the cache instance, initializing it if needed
*
* @return Cache the cache instance, or null if nothing is cached
*/
static function load () {
//Checks extension is okay
if (!extension_loaded('memcached')) {
if (extension_loaded('memcache')) {
message_die(GENERAL_ERROR, "Can't initialize $engine cache engine.<br />PHP extension memcached not loaded.<br /><strong>!!! This class uses the Memcached extension AND NOT the Memcache extension (this one is loaded) !!!</strong>", 'Cache');
} else {
message_die(GENERAL_ERROR, "Can't initialize $engine cache engine.<br />PHP extension memcached not loaded.", 'Cache');
}
}
//Creates the Memcached object if needed
if (self::$instance === null) {
global $Config;
self::$instance = new CacheMemcached();
self::$instance->memcached = new Memcached();
self::$instance->memcached->addServer(
$Config['cache']['server'],
$Config['cache']['port']
);
}
return self::$instance;
}
/**
* Gets the specified key's data
*
* @param string $key the key to fetch
* @return mixed the data at the specified key
*/
function get ($key) {
return $this->memcached->get($key);
}
/**
* Sets the specified data at the specified key
*
* @param string $key the key where to store the specified data
* @param mixed $value the data to store
*/
function set ($key, $value) {
return $this->memcached->set($key, $value);
}
/**
* Deletes the specified key's data
*
* @param string $key the key to delete
*/
function delete ($key) {
return $this->memcached->delete($key);
}
}

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