cakephp2-php8/cake/libs/cache/memcache_engine.php
phpnut bca9595101 Refactoring new cache classes
git-svn-id: https://svn.cakephp.org/repo/branches/1.2.x.x@4936 3807eeeb-6ff5-0310-8944-8be069107fe0
2007-04-30 07:38:47 +00:00

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PHP

<?php
/* SVN FILE: $Id$ */
/**
* Memcache storage engine for cache
*
*
* PHP versions 4 and 5
*
* CakePHP(tm) : Rapid Development Framework <http://www.cakephp.org/>
* Copyright 2005-2007, Cake Software Foundation, Inc.
* 1785 E. Sahara Avenue, Suite 490-204
* Las Vegas, Nevada 89104
*
* Licensed under The MIT License
* Redistributions of files must retain the above copyright notice.
*
* @filesource
* @copyright Copyright 2005-2007, Cake Software Foundation, Inc.
* @link http://www.cakefoundation.org/projects/info/cakephp CakePHP(tm) Project
* @package cake
* @subpackage cake.cake.libs.cache
* @since CakePHP(tm) v 1.2.0.4933
* @version $Revision$
* @modifiedby $LastChangedBy$
* @lastmodified $Date$
* @license http://www.opensource.org/licenses/mit-license.php The MIT License
*/
/**
* Memcache storage engine for cache
*
* @package cake
* @subpackage cake.cake.libs.cache
*/
class MemcacheEngine extends CacheEngine {
var $__Memcache = null;
var $_compress = 0;
/**
* Set up the cache engine
*
* Called automatically by the cache frontend
*
* @param array $params Associative array of parameters for the engine
* @return boolean True if the engine has been succesfully initialized, false if not
*/
function init(&$params) {
$servers = array('127.0.0.1');
$compress = false;
extract($params);
if($compress) {
$this->_compress = MEMCACHE_COMPRESSED;
} else {
$this->_compress = 0;
}
if(!is_array($servers)) {
$servers = array($servers);
}
$this->__Memcache =& new Memcache();
$connected = false;
foreach($servers as $server) {
$parts = explode(':', $server);
$host = $parts[0];
$port = isset($parts[1]) ? $parts[1] : 11211;
if($this->__Memcache->addServer($host, $port)) {
$connected = true;
}
}
return $connected;
}
/**
* Write a value in the cache
*
* @param string $key Identifier for the data
* @param mixed $value Data to be cached
* @param int $duration How long to cache the data, in seconds
* @return boolean True if the data was succesfully cached, false on failure
*/
function write($key, &$value, $duration = CACHE_DEFAULT_DURATION) {
return $this->__Memcache->set($key, $value, $this->_compress, $duration);
}
/**
* Read a value from the cache
*
* @param string $key Identifier for the data
* @return mixed The cached data, or false if the data doesn't exist, has expired, or if there was an error fetching it
*/
function read($key) {
return $this->__Memcache->get($key);
}
/**
* Delete a value from the cache
*
* @param string $key Identifier for the data
* @return boolean True if the value was succesfully deleted, false if it didn't exist or couldn't be removed
*/
function delete($key) {
return $this->__Memcache->delete($key);
}
/**
* Delete all values from the cache
*
* @return boolean True if the cache was succesfully cleared, false otherwise
*/
function clear() {
return $this->__Memcache->flush();
}
/**
* Return the settings for this cache engine
*
* @return array list of settings for this engine
*/
function settings() {
return array('class' => get_class($this),
'compress' => $this->_compress);
}
}
?>