// Diners Club: starts with 300-305, 36, 38, 39 if (preg_match('/^30[0-5]/', $cardNumber)
These services handle the data security for you. They convert sensitive card information into secure tokens, ensuring your server never touches the raw card details directly.
Using libraries like convenia/credit-card-validator-php provides production-ready validation functionality that can be safely integrated into e-commerce platforms: cc checker script php
if ($sum % 10 != 0) return "Invalid credit card number";
This report dissects their inner workings, evasion techniques, and countermeasures. // Diners Club: starts with 300-305, 36, 38,
return $first4 . $masked . $last4;
Example authorized script (sandbox mode): // Diners Club: starts with 300-305
Here's a more advanced CC checker script PHP that uses the Stripe PHP library: