Code Coverage for /var/www/html/dev/src/phpOMS/Validation/Finance/CreditCard.php

1	<?php
2	/**
3	* Jingga
4	*
5	* PHP Version 8.1
6	*
7	* @package phpOMS\Validation\Finance
8	* @copyright Dennis Eichhorn
9	* @license OMS License 2.0
10	* @version 1.0.0
11	* @link https://jingga.app
12	*/
13	declare(strict_types=1);
14
15	namespace phpOMS\Validation\Finance;
16
17	use phpOMS\Validation\ValidatorAbstract;
18
19	/**
20	* Credit card validation
21	*
22	* @package phpOMS\Validation\Finance
23	* @license OMS License 2.0
24	* @link https://jingga.app
25	* @since 1.0.0
26	*/
27	final class CreditCard extends ValidatorAbstract
28	{
29	/**
30	* {@inheritdoc}
31	*/
32	public static function isValid($value, array $constraints = null) : bool
33	{
34	if (!\is_string($value)) {
35	return false;
36	}
37
38	$value = \preg_replace('/\D/', '', $value) ?? '';
39
40	// Set the string length and parity
41	$numberLength = \strlen($value);
42	$parity = $numberLength % 2;
43
44	// Loop through each digit and do the maths
45	$total = 0;
46	for ($i = 0; $i < $numberLength; ++$i) {
47	$digit = (int) $value[$i];
48	// Multiply alternate digits by two
49	if ($i % 2 === $parity) {
50	$digit *= 2;
51	// If the sum is two digits, add them together (in effect)
52	if ($digit > 9) {
53	$digit -= 9;
54	}
55	}
56	// Total up the digits
57	$total += $digit;
58	}
59
60	// If the total mod 10 equals 0, the value is valid
61	return $total % 10 === 0;
62	}
63	}