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✏️ Editing: apcu.php

<?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://secure.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;
	}
}

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