Card payments

• Card Number: Any 16-digits card number starting with ‘4’ (VISA) or ‘5’ (Mastercard) that passes the LUHN test
• Security Code: The validation follows the scheme of the card used, so any 3 digits for VISA/MC, or 4 digits for Amex
• Expiration Date:
  • 01/2030 - SUCCESS payment
  • 02/2030 - FAILED payment and INSUFFICIENT_FUNDS reason
  • 03/2030 - FAILED payment and SOFT_DECLINE reason
  • 04/2030 - FAILED payment and HARD_DECLINE reason
  • 12/2030 - ERROR mandate
  • 01/2028 - SUCCESS payment with 3DS redirection (This should be tested when implementing the server-2-server flow)
  • 02/2028 - FAILED payment with 3DS redirection (This should be tested when implementing the server-2-server flow)

Sample PHP code to generate fake card numbers

<?php

function isLuhnNum($num, $length=null) {
    if (empty($length)) {
        $length = strlen($num);
    }
    $tot = 0;
    for($i = $length - 1; $i >= 0; $i--) {
        $digit = substr($num, $i, 1);
        if ((($length - $i) % 2) == 0) {
            $digit = $digit*2;
            if ($digit > 9) {
                $digit = $digit-9;
            }
        }
        $tot += $digit;
    }
    return (($tot % 10) === 0);
}


function getCardNumber () {
    $cardNumber = str_pad('4'.rand('10', '99').date('U'), 15, '0', STR_PAD_RIGHT);
    for ($i=0; $i<10; $i++) {
        if (isLuhnNum($cardNumber.$i)) {
            return $cardNumber.$i;
        }
    }
    return null;
}

print getCardNumber() . "\n";