بررسی صحت شماره کارت ایرانی در PHP

creditcardverification.php

<?php

function validateCardNumber($cardNumber)
{
    if (empty($cardNumber) || strlen($cardNumber) !== 16) {
        return false;
    }
    $cardToArr = str_split($cardNumber);
    $cardTotal = 0;
    for ($i = 0; $i < 16; $i++) {
        $c = (int)$cardToArr[$i];
        if ($i % 2 === 0) {
            $cardTotal += (($c * 2 > 9) ? ($c * 2) - 9 : ($c * 2));
        } else {
            $cardTotal += $c;
        }
    }
    return ($cardTotal % 10 === 0);
}

// More to read: http://www.aliarash.com/article/creditcart/credit-debit-cart.htm

بیشتر بخوانید: http://www.aliarash.com/article/creditcart/credit-debit-cart.htm