63 lines
1.5 KiB
PHP
63 lines
1.5 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 file
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* that was distributed with this source code.
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*/
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declare(strict_types=1);
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namespace Respect\Validation\Rules;
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use function mb_strlen;
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use function preg_match;
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use function preg_replace;
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/**
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* Validates whether the input is a CPF (Brazilian Natural Persons Register) number.
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*
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* @author Alexandre Gomes Gaigalas <alexandre@gaigalas.net>
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* @author Henrique Moody <henriquemoody@gmail.com>
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* @author Jair Henrique <jair.henrique@gmail.com>
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* @author Jayson Reis <santosdosreis@gmail.com>
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* @author Jean Pimentel <jeanfap@gmail.com>
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* @author William Espindola <oi@williamespindola.com.br>
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*/
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final class Cpf extends AbstractRule
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{
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/**
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* {@inheritDoc}
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*/
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public function validate($input): bool
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{
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// Code ported from jsfromhell.com
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$c = preg_replace('/\D/', '', $input);
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if (mb_strlen($c) != 11 || preg_match('/^' . $c[0] . '{11}$/', $c) || $c === '01234567890') {
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return false;
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}
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$n = 0;
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for ($s = 10, $i = 0; $s >= 2; ++$i, --$s) {
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$n += $c[$i] * $s;
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}
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if ($c[9] != (($n %= 11) < 2 ? 0 : 11 - $n)) {
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return false;
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}
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$n = 0;
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for ($s = 11, $i = 0; $s >= 2; ++$i, --$s) {
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$n += $c[$i] * $s;
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}
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$check = ($n %= 11) < 2 ? 0 : 11 - $n;
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return $c[10] == $check;
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}
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}
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