Kontrolio\Rules\Core\CardScheme

Complexity

Total Complexity

7

Size/Duplication

Total Lines	85
Duplicated Lines	0 %

Importance

Changes	2
Bugs	0	Features	0

1 Method

Rating	Name	Duplication	Size	Complexity
B	isValid()	0	23	7

<?php

namespace Kontrolio\Rules\Core;

use Kontrolio\Rules\AbstractRule;

/**
 * Card scheme validation rule.
 *
 * @package Kontrolio\Rules\Core
 */
class CardScheme extends AbstractRule
{
    /**
     * Card schemes.
     *
     * @var array
     */
    protected static $schemes = [
        // American Express card numbers start with 34 or 37 and have 15 digits.
        'AMEX' => ['/^3[47][0-9]{13}$/'],

        // China UnionPay cards start with 62 and have between 16 and 19 digits.
        // Please note that these cards do not follow Luhn Algorithm as a checksum.
        'CHINA_UNIONPAY' => ['/^62[0-9]{14,17}$/'],

        // Diners Club card numbers begin with 300 through 305, 36 or 38. All have 14 digits.
        // There are Diners Club cards that begin with 5 and have 16 digits.
        // These are a joint venture between Diners Club and MasterCard, and should be processed like a MasterCard.
        'DINERS' => ['/^3(?:0[0-5]|[68][0-9])[0-9]{11}$/'],

        // Discover card numbers begin with 6011, 622126 through 622925, 644 through 649 or 65.
        // All have 16 digits.
        'DISCOVER' => [
            '/^6011[0-9]{12}$/',
            '/^64[4-9][0-9]{13}$/',
            '/^65[0-9]{14}$/',
            '/^622(12[6-9]|1[3-9][0-9]|[2-8][0-9][0-9]|91[0-9]|92[0-5])[0-9]{10}$/',
        ],

        // InstaPayment cards begin with 637 through 639 and have 16 digits.
        'INSTAPAYMENT' => ['/^63[7-9][0-9]{13}$/'],

        // JCB cards beginning with 2131 or 1800 have 15 digits.
        // JCB cards beginning with 35 have 16 digits.
        'JCB' => ['/^(?:2131|1800|35[0-9]{3})[0-9]{11}$/'],

        // Laser cards begin with either 6304, 6706, 6709 or 6771 and have between 16 and 19 digits.
        'LASER' => ['/^(6304|670[69]|6771)[0-9]{12,15}$/'],

        // Maestro international cards begin with 675900..675999 and have between 12 and 19 digits.
        // Maestro UK cards begin with either 500000..509999 or 560000..699999 and have between 12 and 19 digits.
        'MAESTRO' => [
            '/^(6759[0-9]{2})[0-9]{6,13}$/',
            '/^(50[0-9]{4})[0-9]{6,13}$/',
            '/^5[6-9][0-9]{10,17}$/',
            '/^6[0-9]{11,18}$/',
        ],

        // All MasterCard numbers start with the numbers 51 through 55. All have 16 digits.
        'MASTERCARD' => ['/^5[1-5][0-9]{14}$/'],

        // All Visa card numbers start with a 4. New cards have 16 digits. Old cards have 13.
        'VISA' => ['/^4([0-9]{12}|[0-9]{15})$/'],
    ];

    /**
     * Validates input.
     *
     * @param mixed $input
     *
     * @return bool
     */
    public function isValid($input = null)
    {
        if ($input === null || $input === '') {
            return false;
        }

        if (!is_numeric($input)) {
            $this->violations[] = 'numeric';

            return false;
        }

        foreach (static::$schemes as $scheme => $regexes) {
            foreach ($regexes as $regex) {
                if (preg_match($regex, $input)) {
                    return true;
                }
            }
        }

        $this->violations[] = 'scheme';

        return false;
    }
}