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

    public function validate($vatNumber)
    {
        if (strlen($vatNumber) == 9) {
            $vatNumber = "0" . $vatNumber;
        }
        if (strlen($vatNumber) != 10) {
            return false;
        }
        $checkvals = (int) substr($vatNumber, 0, -2);
        $checksum = (int) substr($vatNumber, -2);
        if (97 - $checkvals % 97 != $checksum) {
            return false;
        }
        return true;
    }