HighSpeaker/vendor/workerman/validation/library/Rules/Bsn.php
2022-12-24 22:10:40 +08:00

51 lines
1.1 KiB
PHP

<?php
/*
* This file is part of Respect/Validation.
*
* (c) Alexandre Gomes Gaigalas <alexandre@gaigalas.net>
*
* For the full copyright and license information, please view the LICENSE file
* that was distributed with this source code.
*/
declare(strict_types=1);
namespace Respect\Validation\Rules;
use function ctype_digit;
use function mb_strlen;
/**
* Validates a Dutch citizen service number (BSN).
*
* @see https://nl.wikipedia.org/wiki/Burgerservicenummer
*
* @author Henrique Moody <henriquemoody@gmail.com>
* @author Ronald Drenth <ronalddrenth@gmail.com>
* @author William Espindola <oi@williamespindola.com.br>
*/
final class Bsn extends AbstractRule
{
/**
* {@inheritDoc}
*/
public function validate($input): bool
{
if (!ctype_digit($input)) {
return false;
}
if (mb_strlen($input) !== 9) {
return false;
}
$sum = -1 * $input[8];
for ($i = 9; $i > 1; --$i) {
$sum += $i * $input[9 - $i];
}
return $sum !== 0 && $sum % 11 === 0;
}
}