| public static isConcurrentSessionExists ( ) : boolean | ||
| 리턴 | boolean | |
public static function isConcurrentSessionExists()
{
$session_id = session_id();
$userId = Session::get('user_id');
if (isset($userId) && isset($session_id)) {
$database = DatabaseFactory::getFactory()->getConnection();
$sql = "SELECT session_id FROM users WHERE user_id = :user_id LIMIT 1";
$query = $database->prepare($sql);
$query->execute(array(":user_id" => $userId));
$result = $query->fetch();
$userSessionId = !empty($result) ? $result->session_id : null;
return $session_id !== $userSessionId;
}
return false;
} /**
* Detects if there is concurrent session (i.e. another user logged in with the same current user credentials),
* If so, then logout.
*/
public static function checkSessionConcurrency()
{
if (Session::userIsLoggedIn()) {
if (Session::isConcurrentSessionExists()) {
LoginModel::logout();
Redirect::home();
exit;
}
}
}
