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<?php |
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/** |
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* Linna Framework. |
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* |
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* @author Sebastian Rapetti <[email protected]> |
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* @copyright (c) 2018, Sebastian Rapetti |
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* @license http://opensource.org/licenses/MIT MIT License |
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*/ |
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declare(strict_types=1); |
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namespace Linna\Session; |
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use Memcached; |
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use SessionHandlerInterface; |
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/** |
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* Store sessions in Memcached. |
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* |
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* Check below link for PHP session Handler |
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* http://php.net/manual/en/class.sessionhandler.php |
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*/ |
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class MemcachedSessionHandler implements SessionHandlerInterface |
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{ |
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/** |
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* @var Memcached Memcached instance |
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*/ |
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private Memcached $memcached; |
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/** |
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* @var int Expire time in seconds for stored sessions |
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*/ |
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private int $expire = 0; |
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/** |
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* Constructor. |
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* |
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* @param Memcached $memcached Memcached resource |
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* @param int $expire Expire time in seconds for stored sessions |
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*/ |
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public function __construct(Memcached $memcached, int $expire) |
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{ |
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$this->memcached = $memcached; |
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$this->expire = $expire; |
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} |
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/** |
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* Open session storage. |
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* |
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* http://php.net/manual/en/sessionhandler.open.php. |
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* |
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* @param string $save_path |
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* @param string $session_name |
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* |
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* @return bool |
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*/ |
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public function open($save_path, $session_name) |
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{ |
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unset($save_path, $session_name); |
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return true; |
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} |
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/** |
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* Delete old sessions from storage. |
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* |
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* http://php.net/manual/en/sessionhandler.gc.php. |
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* |
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* @param int $maxlifetime |
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* |
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* @return bool |
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*/ |
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public function gc($maxlifetime) |
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{ |
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unset($maxlifetime); |
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//this method is no needed because all object stored expire without external operation |
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return true; |
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} |
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/** |
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* Read sessio data from storage. |
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* |
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* http://php.net/manual/en/sessionhandler.read.php. |
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* |
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* @param string $session_id |
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* |
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* @return string |
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*/ |
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public function read($session_id) |
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{ |
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//fix for php7 |
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return (string) $this->memcached->get($session_id); |
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} |
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/** |
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* Write session data to storage. |
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* |
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* http://php.net/manual/en/sessionhandler.write.php. |
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* |
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* @param string $session_id |
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* @param string $session_data |
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* |
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* @return bool |
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*/ |
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public function write($session_id, $session_data) |
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{ |
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return $this->memcached->set($session_id, $session_data, $this->expire); |
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} |
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/** |
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* Close session. |
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* |
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* http://php.net/manual/en/sessionhandler.close.php. |
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* |
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* @return bool |
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*/ |
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public function close() |
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{ |
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return true; |
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} |
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/** |
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* Destroy session data. |
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* |
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* http://php.net/manual/en/sessionhandler.destroy.php. |
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* |
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* @param string $session_id |
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* |
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* @return bool |
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*/ |
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public function destroy($session_id) |
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{ |
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if ($this->memcached->delete($session_id)) { |
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return true; |
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} |
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if ($this->memcached->getResultCode() === 16) { |
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return true; |
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} |
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return false; |
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} |
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} |
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linna /
framework
