public static function resetFailedLoginCounterOfUser($user_name)
{
$database = DatabaseFactory::getFactory()->getConnection();
$sql = "UPDATE users\n SET user_failed_logins = 0, user_last_failed_login = NULL\n WHERE user_name = :user_name AND user_failed_logins != 0\n LIMIT 1";
$sth = $database->prepare($sql);
$sth->execute(array(':user_name' => $user_name));
}