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MemcacheSessionHandler.php
001 <?php
002
003 /*
004 * This file is part of the Symfony package.
005 *
006 * (c) Fabien Potencier <fabien@symfony.com>
007 *
008 * For the full copyright and license information, please view the LICENSE
009 * file that was distributed with this source code.
010 */
011
012 namespace Symfony\Component\HttpFoundation\Session\Storage\Handler;
013
014 @trigger_error(sprintf('The class %s is deprecated since Symfony 3.4 and will be removed in 4.0. Use Symfony\Component\HttpFoundation\Session\Storage\Handler\MemcachedSessionHandler instead.', MemcacheSessionHandler::class), \E_USER_DEPRECATED);
015
016 /**
017 * @author Drak <drak@zikula.org>
018 *
019 * @deprecated since version 3.4, to be removed in 4.0. Use Symfony\Component\HttpFoundation\Session\Storage\Handler\MemcachedSessionHandler instead.
020 */
021 class MemcacheSessionHandler implements \SessionHandlerInterface
022 {
023 private $memcache;
024
025 /**
026 * @var int Time to live in seconds
027 */
028 private $ttl;
029
030 /**
031 * @var string Key prefix for shared environments
032 */
033 private $prefix;
034
035 /**
036 * Constructor.
037 *
038 * List of available options:
039 * * prefix: The prefix to use for the memcache keys in order to avoid collision
040 * * expiretime: The time to live in seconds
041 *
042 * @param \Memcache $memcache A \Memcache instance
043 * @param array $options An associative array of Memcache options
044 *
045 * @throws \InvalidArgumentException When unsupported options are passed
046 */
047 public function __construct(\Memcache $memcache, array $options = [])
048 {
049 if ($diff = array_diff(array_keys($options), ['prefix', 'expiretime'])) {
050 throw new \InvalidArgumentException(sprintf('The following options are not supported "%s".', implode(', ', $diff)));
051 }
052
053 $this->memcache = $memcache;
054 $this->ttl = isset($options['expiretime']) ? (int) $options['expiretime'] : 86400;
055 $this->prefix = isset($options['prefix']) ? $options['prefix'] : 'sf2s';
056 }
057
058 /**
059 * {@inheritdoc}
060 */
061 public function open($savePath, $sessionName)
062 {
063 return true;
064 }
065
066 /**
067 * {@inheritdoc}
068 */
069 public function close()
070 {
071 return true;
072 }
073
074 /**
075 * {@inheritdoc}
076 */
077 public function read($sessionId)
078 {
079 return $this->memcache->get($this->prefix.$sessionId) ?: '';
080 }
081
082 /**
083 * {@inheritdoc}
084 */
085 public function write($sessionId, $data)
086 {
087 return $this->memcache->set($this->prefix.$sessionId, $data, 0, time() + $this->ttl);
088 }
089
090 /**
091 * {@inheritdoc}
092 */
093 public function destroy($sessionId)
094 {
095 $this->memcache->delete($this->prefix.$sessionId);
096
097 return true;
098 }
099
100 /**
101 * {@inheritdoc}
102 */
103 public function gc($maxlifetime)
104 {
105 // not required here because memcache will auto expire the records anyhow.
106 return true;
107 }
108
109 /**
110 * Return a Memcache instance.
111 *
112 * @return \Memcache
113 */
114 protected function getMemcache()
115 {
116 return $this->memcache;
117 }
118 }
119