Zend Data cache Storage engine for Cakephp cache

zenddisk.php

<?php
/* SVN FILE: $Id$ */
/**
 * Zend Data Cache storage engine for cache.
 *
 *
 * PHP versions 4 and 5
 *
 * CakePHP(tm) :  Rapid Development Framework (http://www.cakephp.org)
 * Copyright 2005-2008, Cake Software Foundation, Inc. (http://www.cakefoundation.org)
 *
 * Licensed under The MIT License
 * Redistributions of files must retain the above copyright notice.
 *
 * @filesource
 * @copyright     Copyright 2005-2008, Cake Software Foundation, Inc. (http://www.cakefoundation.org)
 * @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
 */
/**
 * Zend Disk storage engine for cache
 *
 * @package       cake
 * @subpackage    cake.cake.libs.cache
 */
class ZendDiskEngine extends CacheEngine {

	/**
	 * Initialize the Cache Engine
	 *
	 * Called automatically by the cache frontend
	 * To reinitialize the settings call Cache::engine('EngineName', [optional] settings = array());
	 *
	 * @param array $setting array of setting for the engine
	 * @return boolean True if the engine has been successfully initialized, false if not
	 * @see CacheEngine::__defaults
	 * @access public
	 */
	function init($settings = array()) {
		parent::init(array_merge(array(
			'engine' => 'ZendDisk', 
			'prefix' => Inflector::slug(APP_DIR) . '_', 
			'namespace' => 'CakePHP'
		), $settings));
		return function_exists('zend_disk_cache_store');
	}

	/**
	 * Write data for key into cache
	 *
	 * @param string $key Identifier for the data
	 * @param mixed $value Data to be cached
	 * @param integer $duration How long to cache the data, in seconds
	 * @return boolean True if the data was succesfully cached, false on failure
	 * @access public
	 */
	function write($key, &$value, $duration) {
		return zend_disk_cache_store($this->settings['namespace'] . '::' . $key, $value, $duration);
	}

	/**
	 * Read a key from the cache
	 *
	 * @param string $key Identifier for the data
	 * @return mixed The cached data, or false if the data doesn't exist, has expired, or if there was an error fetching it
	 * @access public
	 */
	function read($key) {
		return zend_disk_cache_fetch($this->settings['namespace'] . '::' . $key);
	}

	/**
	 * Delete a key from the cache
	 *
	 * @param string $key Identifier for the data
	 * @return boolean True if the value was succesfully deleted, false if it didn't exist or couldn't be removed
	 * @access public
	 */
	function delete($key) {
		return zend_disk_cache_delete($this->settings['namespace'] . '::' . $key);
	}

	/**
	 * Delete all keys from the cache
	 *
	 * @return boolean True if the cache was succesfully cleared, false otherwise
	 * @access public
	 */
	function clear() {
		return zend_disk_cache_clear($this->settings['namespace']);
	}
}
?>

zendshm.php

<?php
/* SVN FILE: $Id$ */
/**
 * Zend Data Cache storage engine for cache.
 *
 *
 * PHP versions 4 and 5
 *
 * CakePHP(tm) :  Rapid Development Framework (http://www.cakephp.org)
 * Copyright 2005-2008, Cake Software Foundation, Inc. (http://www.cakefoundation.org)
 *
 * Licensed under The MIT License
 * Redistributions of files must retain the above copyright notice.
 *
 * @filesource
 * @copyright     Copyright 2005-2008, Cake Software Foundation, Inc. (http://www.cakefoundation.org)
 * @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
 */
/**
 * Zend Shared Memory storage engine for cache
 *
 * @package       cake
 * @subpackage    cake.cake.libs.cache
 */
class ZendSHMEngine extends CacheEngine {

	/**
	 * Initialize the Cache Engine
	 *
	 * Called automatically by the cache frontend
	 * To reinitialize the settings call Cache::engine('EngineName', [optional] settings = array());
	 *
	 * @param array $setting array of setting for the engine
	 * @return boolean True if the engine has been successfully initialized, false if not
	 * @see CacheEngine::__defaults
	 * @access public
	 */
	function init($settings = array()) {
		parent::init(array_merge(array(
			'engine' => 'ZendSHM', 
			'prefix' => Inflector::slug(APP_DIR) . '_', 
			'namespace' => 'CakePHP'
		), $settings));
		return function_exists('zend_shm_cache_store');
	}

	/**
	 * Write data for key into cache
	 *
	 * @param string $key Identifier for the data
	 * @param mixed $value Data to be cached
	 * @param integer $duration How long to cache the data, in seconds
	 * @return boolean True if the data was succesfully cached, false on failure
	 * @access public
	 */
	function write($key, &$value, $duration) {
		return zend_shm_cache_store($this->settings['namespace'] . '::' . $key, $value, $duration);
	}

	/**
	 * Read a key from the cache
	 *
	 * @param string $key Identifier for the data
	 * @return mixed The cached data, or false if the data doesn't exist, has expired, or if there was an error fetching it
	 * @access public
	 */
	function read($key) {
		return zend_shm_cache_fetch($this->settings['namespace'] . '::' . $key);
	}

	/**
	 * Delete a key from the cache
	 *
	 * @param string $key Identifier for the data
	 * @return boolean True if the value was succesfully deleted, false if it didn't exist or couldn't be removed
	 * @access public
	 */
	function delete($key) {
		return zend_shm_cache_delete($this->settings['namespace'] . '::' . $key);
	}

	/**
	 * Delete all keys from the cache
	 *
	 * @return boolean True if the cache was succesfully cleared, false otherwise
	 * @access public
	 */
	function clear() {
		return zend_shm_cache_clear($this->settings['namespace']);
	}
}
?>