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<?php
/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */
/**
* Database container for session data
*
* Memcache database container
*
* PHP version 4
*
* LICENSE: This source file is subject to version 3.0 of the PHP license
* that is available through the world-wide-web at the following URI:
* http://www.php.net/license/3_0.txt. If you did not receive a copy of
* the PHP License and are unable to obtain it through the web, please
* send a note to license@php.net so we can mail you a copy immediately.
*
* @category HTTP
* @package HTTP_Session
* @author Chad Wagner <chad.wagner@gmail.com>
* @author Torsten Roehr <torsten.roehr@gmx.de>
* @copyright 1997-2007 The PHP Group
* @license http://www.php.net/license/3_0.txt PHP License 3.0
* @version CVS: $Id: Memcache.php,v 1.3 2007/07/14 12:11:55 troehr Exp $
* @link http://pear.php.net/package/HTTP_Session
* @since File available since Release 0.5.6
*/
require_once 'HTTP/Session/Container.php';
/**
* Database container for session data
*
* @category HTTP
* @package HTTP_Session
* @author Chad Wagner <chad.wagner@gmail.com>
* @author Torsten Roehr <torsten.roehr@gmx.de>
* @copyright 1997-2007 The PHP Group
* @license http://www.php.net/license/3_0.txt PHP License 3.0
* @version Release: @package_version@
* @link http://pear.php.net/package/HTTP_Session
* @since Class available since Release 0.5.6
*/
class HTTP_Session_Container_Memcache extends HTTP_Session_Container
{
/**
* Memcache connection object
*
* @var object Memcache
* @access private
*/
var $mc;
/**
* Constructor method
*
* $options is an array with the options.<br>
* The options are:
* <ul>
* <li>'memcache' - Memcache object
* <li>'prefix' - Key prefix, default is 'sessiondata:'</li>
* </ul>
*
* @param array $options Options
*
* @access public
* @return object
*/
function HTTP_Session_Container_Memcache($options)
{
$this->_setDefaults();
if (is_array($options)) {
$this->_parseOptions($options);
}
}
/**
* Connect to database by using the given DSN string
*
* @param string $mc Memcache object
*
* @access private
* @return mixed Object on error, otherwise bool
*/
function _connect($mc)
{
if (is_object($mc) && is_a($mc, 'Memcache')) {
$this->mc = $mc;
} else {
return new PEAR_Error('The given memcache object was not valid in file '
. __FILE__ . ' at line ' . __LINE__,
41,
PEAR_ERROR_RETURN,
null,
null
);
}
return true;
}
/**
* Set some default options
*
* @access private
* @return void
*/
function _setDefaults()
{
$this->options['prefix'] = 'sessiondata:';
$this->options['memcache'] = null;
}
/**
* Establish connection to a database
*
* @param string $save_path Save path
* @param string $session_name Session name
*
* @access public
* @return mixed Object on error, otherwise bool
*/
function open($save_path, $session_name)
{
return $this->_connect($this->options['memcache']);
}
/**
* Free resources
*
* @access public
* @return bool
*/
function close()
{
return true;
}
/**
* Read session data
*
* @param string $id Session id
*
* @access public
* @return mixed
*/
function read($id)
{
$result = $this->mc->get($this->options['prefix'] . $id);
return $result;
}
/**
* Write session data
*
* @param string $id Session id
* @param mixed $data Session data
*
* @access public
* @return bool
*/
function write($id, $data)
{
$this->mc->set($this->options['prefix'] . $id,
$data,
MEMCACHE_COMPRESSED,
time() + ini_get('session.gc_maxlifetime'));
return true;
}
/**
* Destroy session data
*
* @param string $id Session id
*
* @access public
* @return bool
*/
function destroy($id)
{
$this->mc->delete($this->options['prefix'] . $id);
return true;
}
/**
* Garbage collection
*
* @param int $maxlifetime Maximum lifetime
*
* @access public
* @return bool
*/
function gc($maxlifetime)
{
return true;
}
}
?>