<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed'); /** * CodeIgniter * * An open source application development framework for PHP 5.1.6 or newer * * NOTICE OF LICENSE * * Licensed under the Open Software License version 3.0 * * This source file is subject to the Open Software License (OSL 3.0) that is * bundled with this package in the files license.txt / license.rst. It is * also available through the world wide web at this URL: * http://opensource.org/licenses/OSL-3.0 * If you did not receive a copy of the license and are unable to obtain it * through the world wide web, please send an email to * licensing@ellislab.com so we can send you a copy immediately. * * @package CodeIgniter * @author EllisLab Dev Team * @copyright Copyright (c) 2006 - 2012 EllisLab, Inc. * @license http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0) * @link http://codeigniter.com * @since Version 2.0 * @filesource */ // ------------------------------------------------------------------------ /** * CodeIgniter APC Caching Class * * @package CodeIgniter * @subpackage Libraries * @category Core * @author EllisLab Dev Team * @link */ class CI_Cache_apc extends CI_Driver { /** * Get * * Look for a value in the cache. If it exists, return the data * if not, return FALSE * * @param string * @return mixed value that is stored/FALSE on failure */ public function get($id) { $data = apc_fetch($id); return (is_array($data)) ? $data[0] : FALSE; } // ------------------------------------------------------------------------ /** * Cache Save * * @param string Unique Key * @param mixed Data to store * @param int Length of time (in seconds) to cache the data * * @return boolean true on success/false on failure */ public function save($id, $data, $ttl = 60) { $ttl = (int) $ttl; return apc_store($id, array($data, time(), $ttl), $ttl); } // ------------------------------------------------------------------------ /** * Delete from Cache * * @param mixed unique identifier of the item in the cache * @param boolean true on success/false on failure */ public function delete($id) { return apc_delete($id); } // ------------------------------------------------------------------------ /** * Clean the cache * * @return boolean false on failure/true on success */ public function clean() { return apc_clear_cache('user'); } // ------------------------------------------------------------------------ /** * Cache Info * * @param string user/filehits * @return mixed array on success, false on failure */ public function cache_info($type = NULL) { return apc_cache_info($type); } // ------------------------------------------------------------------------ /** * Get Cache Metadata * * @param mixed key to get cache metadata on * @return mixed array on success/false on failure */ public function get_metadata($id) { $stored = apc_fetch($id); if (count($stored) !== 3) { return FALSE; } list($data, $time, $ttl) = $stored; return array( 'expire' => $time + $ttl, 'mtime' => $time, 'data' => $data ); } // ------------------------------------------------------------------------ /** * is_supported() * * Check to see if APC is available on this system, bail if it isn't. */ public function is_supported() { if ( ! extension_loaded('apc') OR ini_get('apc.enabled') != "1") { log_message('error', 'The APC PHP extension must be loaded to use APC Cache.'); return FALSE; } return TRUE; } // ------------------------------------------------------------------------ } // End Class /* End of file Cache_apc.php */ /* Location: ./system/libraries/Cache/drivers/Cache_apc.php */