44 lines
897 B
PHP
44 lines
897 B
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.md"
|
|
* file that was distributed with this source code.
|
|
*/
|
|
|
|
namespace Respect\Validation\Rules;
|
|
|
|
/**
|
|
* Validates a Dutch citizen service number (BSN).
|
|
*
|
|
* @author Ronald Drenth <ronalddrenth@gmail.com>
|
|
*
|
|
* @see https://nl.wikipedia.org/wiki/Burgerservicenummer
|
|
*/
|
|
class Bsn extends AbstractRule
|
|
{
|
|
/**
|
|
* {@inheritdoc}
|
|
*/
|
|
public function validate($input)
|
|
{
|
|
if (!ctype_digit($input)) {
|
|
return false;
|
|
}
|
|
|
|
if (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;
|
|
}
|
|
}
|