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42 lines
1 KiB
PHP
42 lines
1 KiB
PHP
<?php
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/*
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* This file is part of Respect/Validation.
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*
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* (c) Alexandre Gomes Gaigalas <alexandre@gaigalas.net>
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*
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* For the full copyright and license information, please view the "LICENSE.md"
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* file that was distributed with this source code.
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*/
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namespace Respect\Validation\Rules;
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class Cnh extends AbstractRule
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{
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public function validate($input)
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{
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$ret = false;
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if ((strlen($input = preg_replace('/[^\d]/', '', $input)) == 11)
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&& (str_repeat($input[1], 11) != $input)) {
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$dsc = 0;
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for ($i = 0, $j = 9, $v = 0; $i < 9; ++$i, --$j) {
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$v += (int) $input[$i] * $j;
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}
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if (($vl1 = $v % 11) >= 10) {
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$vl1 = 0;
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$dsc = 2;
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}
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for ($i = 0, $j = 1, $v = 0; $i < 9; ++$i, ++$j) {
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$v += (int) $input[$i] * $j;
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}
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$vl2 = ($x = ($v % 11)) >= 10 ? 0 : $x - $dsc;
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$ret = sprintf('%d%d', $vl1, $vl2) == substr($input, -2);
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}
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return $ret;
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}
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}
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