Chris@0: <?php
Chris@0: 
Chris@0: /*
Chris@0:  * This file is part of the Symfony package.
Chris@0:  *
Chris@0:  * (c) Fabien Potencier <fabien@symfony.com>
Chris@0:  *
Chris@0:  * For the full copyright and license information, please view the LICENSE
Chris@0:  * file that was distributed with this source code.
Chris@0:  */
Chris@0: 
Chris@0: namespace Symfony\Component\HttpFoundation\Session\Storage\Handler;
Chris@0: 
Chris@0: /**
Chris@0:  * Wraps another SessionHandlerInterface to only write the session when it has been modified.
Chris@0:  *
Chris@0:  * @author Adrien Brault <adrien.brault@gmail.com>
Chris@14:  *
Chris@14:  * @deprecated since version 3.4, to be removed in 4.0. Implement `SessionUpdateTimestampHandlerInterface` or extend `AbstractSessionHandler` instead.
Chris@0:  */
Chris@0: class WriteCheckSessionHandler implements \SessionHandlerInterface
Chris@0: {
Chris@0:     private $wrappedSessionHandler;
Chris@0: 
Chris@0:     /**
Chris@0:      * @var array sessionId => session
Chris@0:      */
Chris@0:     private $readSessions;
Chris@0: 
Chris@0:     public function __construct(\SessionHandlerInterface $wrappedSessionHandler)
Chris@0:     {
Chris@17:         @trigger_error(sprintf('The %s class is deprecated since Symfony 3.4 and will be removed in 4.0. Implement `SessionUpdateTimestampHandlerInterface` or extend `AbstractSessionHandler` instead.', self::class), E_USER_DEPRECATED);
Chris@17: 
Chris@0:         $this->wrappedSessionHandler = $wrappedSessionHandler;
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * {@inheritdoc}
Chris@0:      */
Chris@0:     public function close()
Chris@0:     {
Chris@0:         return $this->wrappedSessionHandler->close();
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * {@inheritdoc}
Chris@0:      */
Chris@0:     public function destroy($sessionId)
Chris@0:     {
Chris@0:         return $this->wrappedSessionHandler->destroy($sessionId);
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * {@inheritdoc}
Chris@0:      */
Chris@0:     public function gc($maxlifetime)
Chris@0:     {
Chris@0:         return $this->wrappedSessionHandler->gc($maxlifetime);
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * {@inheritdoc}
Chris@0:      */
Chris@0:     public function open($savePath, $sessionName)
Chris@0:     {
Chris@0:         return $this->wrappedSessionHandler->open($savePath, $sessionName);
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * {@inheritdoc}
Chris@0:      */
Chris@0:     public function read($sessionId)
Chris@0:     {
Chris@0:         $session = $this->wrappedSessionHandler->read($sessionId);
Chris@0: 
Chris@0:         $this->readSessions[$sessionId] = $session;
Chris@0: 
Chris@0:         return $session;
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * {@inheritdoc}
Chris@0:      */
Chris@0:     public function write($sessionId, $data)
Chris@0:     {
Chris@0:         if (isset($this->readSessions[$sessionId]) && $data === $this->readSessions[$sessionId]) {
Chris@0:             return true;
Chris@0:         }
Chris@0: 
Chris@0:         return $this->wrappedSessionHandler->write($sessionId, $data);
Chris@0:     }
Chris@0: }