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   1  <?php
   2  
   3  /*
   4   * This file is part of the Symfony package.
   5   *
   6   * (c) Fabien Potencier <fabien@symfony.com>
   7   *
   8   * For the full copyright and license information, please view the LICENSE
   9   * file that was distributed with this source code.
  10   */
  11  
  12  namespace Symfony\Component\HttpFoundation\Session\Storage;
  13  
  14  /**
  15   * Allows session to be started by PHP and managed by Symfony.
  16   *
  17   * @author Drak <drak@zikula.org>
  18   */
  19  class PhpBridgeSessionStorage extends NativeSessionStorage
  20  {
  21      /**
  22       * @param \SessionHandlerInterface|null $handler
  23       * @param MetadataBag                   $metaBag MetadataBag
  24       */
  25      public function __construct($handler = null, MetadataBag $metaBag = null)
  26      {
  27          if (!\extension_loaded('session')) {
  28              throw new \LogicException('PHP extension "session" is required.');
  29          }
  30  
  31          $this->setMetadataBag($metaBag);
  32          $this->setSaveHandler($handler);
  33      }
  34  
  35      /**
  36       * {@inheritdoc}
  37       */
  38      public function start()
  39      {
  40          if ($this->started) {
  41              return true;
  42          }
  43  
  44          $this->loadSession();
  45  
  46          return true;
  47      }
  48  
  49      /**
  50       * {@inheritdoc}
  51       */
  52      public function clear()
  53      {
  54          // clear out the bags and nothing else that may be set
  55          // since the purpose of this driver is to share a handler
  56          foreach ($this->bags as $bag) {
  57              $bag->clear();
  58          }
  59  
  60          // reconnect the bags to the session
  61          $this->loadSession();
  62      }
  63  }