/**
* Returns all sessions which are tagged by the specified tag.
*
* @param string $tag A valid Cache Frontend tag
* @return array A collection of Session objects or an empty array if tag did not match
* @api
*/
public function getSessionsByTag($tag)
{
$taggedSessions = array();
foreach ($this->metaDataCache->getByTag(Session::TAG_PREFIX . $tag) as $sessionIdentifier => $sessionInfo) {
$session = new Session($sessionIdentifier, $sessionInfo['storageIdentifier'], $sessionInfo['lastActivityTimestamp'], $sessionInfo['tags']);
$taggedSessions[] = $session;
}
return $taggedSessions;
}
