Cc Checker Script Php Best

<?php function luhnCheck($cardNumber) // Remove any non-digit characters $cardNumber = preg_replace('/\D/', '', $cardNumber); $sum = 0; $numDigits = strlen($cardNumber); $parity = $numDigits % 2;

If doubling results in a number greater than 9, subtract 9 from it. cc checker script php best

Finally, here are some final tips to keep in mind when using a CC checker script PHP: $sum = 0