WPDKUser::getTransientTimeWithUser PHP Method

    public static function getTransientTimeWithUser($transient, $user_id = null)
    {
        $user_id = is_null($user_id) ? get_current_user_id() : $user_id;
        $transient_timeout = '_transient_timeout_' . $transient;
        return get_user_meta($user_id, $transient_timeout, true);
    }