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<?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 <[email protected]> |
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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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declare(strict_types=1); |
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namespace Respect\Validation\Rules; |
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use function array_map; |
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use function array_sum; |
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use function count; |
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use function is_scalar; |
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use function preg_replace; |
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/** |
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* Validates if the input is a Brazilian National Registry of Legal Entities (CNPJ) number. |
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* |
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* @author Alexandre Gomes Gaigalas <[email protected]> |
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* @author Henrique Moody <[email protected]> |
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* @author Jayson Reis <[email protected]> |
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* @author Nick Lombard <[email protected]> |
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* @author Renato Moura <[email protected]> |
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* @author William Espindola <[email protected]> |
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*/ |
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final class Cnpj 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($input): bool |
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{ |
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if (!is_scalar($input)) { |
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return false; |
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} |
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// Code ported from jsfromhell.com |
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$bases = [6, 5, 4, 3, 2, 9, 8, 7, 6, 5, 4, 3, 2]; |
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$digits = $this->getDigits((string) $input); |
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if (array_sum($digits) < 1) { |
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return false; |
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} |
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if (14 !== count($digits)) { |
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return false; |
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} |
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$n = 0; |
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for ($i = 0; $i < 12; ++$i) { |
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$n += $digits[$i] * $bases[$i+1]; |
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} |
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if ($digits[12] != ((($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 ($i = 0; $i <= 12; ++$i) { |
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$n += $digits[$i] * $bases[$i]; |
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} |
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if ($digits[13] != ((($n %= 11) < 2) ? 0 : 11 - $n)) { |
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return false; |
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} |
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return true; |
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} |
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/** |
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* @return int[] |
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*/ |
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private function getDigits(string $input): array |
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{ |
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return array_map( |
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'intval', |
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str_split( |
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preg_replace('/\D/', '', $input) |
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) |
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); |
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} |
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} |
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Respect /
Validation
