DragonBe\Vies\Validator\ValidatorLU::validate PHP Method

    public function validate($vatNumber)
    {
        if (strlen($vatNumber) != 8) {
            return false;
        }
        $checksum = (int) substr($vatNumber, -2);
        $checkval = (int) substr($vatNumber, 0, 6);
        if ($checkval % 89 != $checksum) {
            return false;
        }
        return true;
    }