public static function getQuarter($month = null)
    {
        if ($month === null) {
            $month = date('n', abs(time()));
        }

        if (in_array($month, range(1, 3))) {
            return 1;
        }

        if (in_array($month, range(4, 6))) {
            return 2;
        }

        if (in_array($month, range(7, 9))) {
            return 3;
        }

        if (in_array($month, range(10, 12))) {
            return 4;
        }
    }