<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
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/**
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* CodeIgniter
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*
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* An open source application development framework for PHP 5.1.6 or newer
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*
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* @package CodeIgniter
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* @author ExpressionEngine Dev Team
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* @copyright Copyright (c) 2006 - 2012 EllisLab, Inc.
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* @license http://codeigniter.com/user_guide/license.html
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* @link http://codeigniter.com
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* @since Version 2.0
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* @filesource
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*/
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// ------------------------------------------------------------------------
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/**
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* CodeIgniter APC Caching Class
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*
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* @package CodeIgniter
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* @subpackage Libraries
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* @category Core
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* @author ExpressionEngine Dev Team
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* @link
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*/
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class CI_Cache_apc extends CI_Driver {
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/**
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* Get
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*
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* Look for a value in the cache. If it exists, return the data
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* if not, return FALSE
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*
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* @param string
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* @return mixed value that is stored/FALSE on failure
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*/
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public function get($id)
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{
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$data = apc_fetch($id);
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return (is_array($data)) ? $data[0] : FALSE;
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}
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// ------------------------------------------------------------------------
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/**
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* Cache Save
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*
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* @param string Unique Key
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* @param mixed Data to store
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* @param int Length of time (in seconds) to cache the data
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*
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* @return boolean true on success/false on failure
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*/
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public function save($id, $data, $ttl = 60)
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{
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return apc_store($id, array($data, time(), $ttl), $ttl);
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}
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// ------------------------------------------------------------------------
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/**
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* Delete from Cache
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*
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* @param mixed unique identifier of the item in the cache
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* @param boolean true on success/false on failure
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*/
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public function delete($id)
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{
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return apc_delete($id);
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}
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// ------------------------------------------------------------------------
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/**
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* Clean the cache
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*
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* @return boolean false on failure/true on success
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*/
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public function clean()
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{
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return apc_clear_cache('user');
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}
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// ------------------------------------------------------------------------
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/**
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* Cache Info
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*
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* @param string user/filehits
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* @return mixed array on success, false on failure
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*/
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public function cache_info($type = NULL)
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{
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return apc_cache_info($type);
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}
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// ------------------------------------------------------------------------
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/**
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* Get Cache Metadata
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*
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* @param mixed key to get cache metadata on
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* @return mixed array on success/false on failure
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*/
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public function get_metadata($id)
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{
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$stored = apc_fetch($id);
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if (count($stored) !== 3)
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{
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return FALSE;
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}
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list($data, $time, $ttl) = $stored;
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return array(
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'expire' => $time + $ttl,
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'mtime' => $time,
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'data' => $data
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);
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}
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// ------------------------------------------------------------------------
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/**
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* is_supported()
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*
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* Check to see if APC is available on this system, bail if it isn't.
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*/
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public function is_supported()
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{
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if ( ! extension_loaded('apc') OR ini_get('apc.enabled') != "1")
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{
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log_message('error', 'The APC PHP extension must be loaded to use APC Cache.');
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return FALSE;
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}
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return TRUE;
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}
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// ------------------------------------------------------------------------
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}
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// End Class
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/* End of file Cache_apc.php */
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/* Location: ./system/libraries/Cache/drivers/Cache_apc.php */
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