function validate($cc, $debug = false) { $luhn = Algorithm::Luhn($cc); if ($debug) { echo $cc . " : " . $luhn . " - " . ($luhn % 10 == 0 ? "valid" : "invalid"); } return $luhn % 10 == 0; }
private function _checksumCalc() { return Algorithm::Luhn($this->siret); }