apcu.php
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<?php
/**
* @package Joomla.Platform
* @subpackage Session
*
* @copyright Copyright (C) 2005 - 2019 Open Source Matters, Inc. All rights reserved.
* @license GNU General Public License version 2 or later; see LICENSE
*/
defined('JPATH_PLATFORM') or die;
/**
* APC session storage handler for PHP
*
* @link https://www.php.net/manual/en/function.session-set-save-handler.php
* @since 3.9
* @deprecated 4.0 The CMS' Session classes will be replaced with the `joomla/session` package
*/
class JSessionStorageApcu extends JSessionStorage
{
/**
* Constructor
*
* @param array $options Optional parameters
*
* @since 3.9
* @throws RuntimeException
*/
public function __construct($options = array())
{
if (!self::isSupported())
{
throw new RuntimeException('APCu Extension is not available', 404);
}
parent::__construct($options);
}
/**
* Read the data for a particular session identifier from the
* SessionHandler backend.
*
* @param string $id The session identifier.
*
* @return string The session data.
*
* @since 3.9
*/
public function read($id)
{
$sess_id = 'sess_' . $id;
return (string) apcu_fetch($sess_id);
}
/**
* Write session data to the SessionHandler backend.
*
* @param string $id The session identifier.
* @param string $session_data The session data.
*
* @return boolean True on success, false otherwise.
*
* @since 3.9
*/
public function write($id, $session_data)
{
$sess_id = 'sess_' . $id;
return apcu_store($sess_id, $session_data, ini_get('session.gc_maxlifetime'));
}
/**
* Destroy the data for a particular session identifier in the SessionHandler backend.
*
* @param string $id The session identifier.
*
* @return boolean True on success, false otherwise.
*
* @since 3.9
*/
public function destroy($id)
{
$sess_id = 'sess_' . $id;
// The apcu_delete function returns false if the id does not exist
return apcu_delete($sess_id = 'sess_' . $id) || !apcu_exists($sess_id = 'sess_' . $id);
}
/**
* Test to see if the SessionHandler is available.
*
* @return boolean True on success, false otherwise.
*
* @since 3.9
*/
public static function isSupported()
{
$supported = extension_loaded('apcu') && ini_get('apc.enabled');
// If on the CLI interface, the `apc.enable_cli` option must also be enabled
if ($supported && php_sapi_name() === 'cli')
{
$supported = ini_get('apc.enable_cli');
}
return (bool) $supported;
}
}