Respect\Validation\Rules\Pis

Complexity

Total Complexity

6

Size/Duplication

Total Lines	30
Duplicated Lines	0 %

Coupling/Cohesion

Components	0
Dependencies	1

Test Coverage

Coverage

100%

Importance

Changes

0

1 Method

Rating	Name	Duplication	Size	Complexity
B	validate()	0	24	6

<?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 Brazilian PIS/NIS number.
 *
 * @author Bruno Koga <brunokoga187@gmail.com>
 * @author Henrique Moody <henriquemoody@gmail.com>
 */
class Pis extends AbstractRule
{
    /**
     * {@inheritdoc}
     */
    public function validate($input)
    {
        if (!is_scalar($input)) {
            return false;
        }

        $digits = preg_replace('/\D/', '', $input);
        if (mb_strlen($digits) != 11 || preg_match("/^{$digits[0]}{11}$/", $digits)) {
            return false;
        }

        $multipliers = [3, 2, 9, 8, 7, 6, 5, 4, 3, 2];

        $summation = 0;
        for ($position = 0; $position < 10; ++$position) {
            $summation += $digits[$position] * $multipliers[$position];
        }

        $checkDigit = (int) $digits[10];

        $modulo = $summation % 11;

        return $checkDigit === (($modulo < 2) ? 0 : 11 - $modulo);
    }
}