for testing and deploying your application
for finding and fixing issues
for empowering human code reviews
We could not synchronize checks via GitHub's checks API since Scrutinizer's GitHub App is not installed for this repository.
Install GitHub App
<?php
/*
* This file is part of Respect/Validation.
*
* (c) Alexandre Gomes Gaigalas <[email protected]>
* For the full copyright and license information, please view the "LICENSE.md"
* file that was distributed with this source code.
*/
declare(strict_types=1);
namespace Respect\Validation\Rules;
use function ord;
use function preg_match;
/**
* Validates whether the input is a Polish identity card (Dowód Osobisty).
* @see https://en.wikipedia.org/wiki/Polish_identity_card
* @author Henrique Moody <[email protected]>
final class PolishIdCard extends AbstractRule
{
private const ASCII_CODE_0 = 48;
private const ASCII_CODE_7 = 55;
private const ASCII_CODE_9 = 57;
private const ASCII_CODE_A = 65;
* {@inheritDoc}
public function validate($input): bool
if (!preg_match('/^[A-Z0-9]{9}$/', $input)) {
return false;
}
$weights = [7, 3, 1, 0, 7, 3, 1, 7, 3];
$weightedSum = 0;
for ($i = 0; $i < 9; ++$i) {
$code = ord($input[$i]);
if ($i < 3 && $code <= self::ASCII_CODE_9) {
if ($i > 2 && $code >= self::ASCII_CODE_A) {
$difference = $code <= self::ASCII_CODE_9 ? self::ASCII_CODE_0 : self::ASCII_CODE_7;
$weightedSum += ($code - $difference) * $weights[$i];
return $weightedSum % 10 == $input[3];