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<?php
/**
*
* This file is part of the phpBB Forum Software package.
*
* @copyright (c) phpBB Limited <https://www.phpbb.com>
* @license GNU General Public License, version 2 (GPL-2.0)
*
* For full copyright and license information, please see
* the docs/CREDITS.txt file.
*
*/
namespace phpbb\cache\driver;
/**
* ACM for XCache
*
* To use this module you need ini_get() enabled and the following INI settings configured as follows:
* - xcache.var_size > 0
* - xcache.admin.enable_auth = off (or xcache.admin.user and xcache.admin.password set)
*
*/
class xcache extends \phpbb\cache\driver\memory
{
var $extension = 'XCache';
function __construct()
{
parent::__construct();
if (!function_exists('ini_get') || (int) ini_get('xcache.var_size') <= 0)
{
trigger_error('Increase xcache.var_size setting above 0 or enable ini_get() to use this ACM module.', E_USER_ERROR);
}
}
/**
* {@inheritDoc}
*/
function purge()
{
// Run before for XCache, if admin functions are disabled it will terminate execution
parent::purge();
// If the admin authentication is enabled but not set up, this will cause a nasty error.
// Not much we can do about it though.
$n = xcache_count(XC_TYPE_VAR);
for ($i = 0; $i < $n; $i++)
{
xcache_clear_cache(XC_TYPE_VAR, $i);
}
}
/**
* Fetch an item from the cache
*
* @access protected
* @param string $var Cache key
* @return mixed Cached data
*/
function _read($var)
{
$result = xcache_get($this->key_prefix . $var);
return ($result !== null) ? $result : false;
}
/**
* Store data in the cache
*
* @access protected
* @param string $var Cache key
* @param mixed $data Data to store
* @param int $ttl Time-to-live of cached data
* @return bool True if the operation succeeded
*/
function _write($var, $data, $ttl = 2592000)
{
return xcache_set($this->key_prefix . $var, $data, $ttl);
}
/**
* Remove an item from the cache
*
* @access protected
* @param string $var Cache key
* @return bool True if the operation succeeded
*/
function _delete($var)
{
return xcache_unset($this->key_prefix . $var);
}
/**
* Check if a cache var exists
*
* @access protected
* @param string $var Cache key
* @return bool True if it exists, otherwise false
*/
function _isset($var)
{
return xcache_isset($this->key_prefix . $var);
}
}
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