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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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namespace Respect\Validation\Rules; |
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/** |
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* Validates Spain's fiscal identification number (NIF). |
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* |
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* @author Julián Gutiérrez <[email protected]> |
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* |
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* @see https://es.wikipedia.org/wiki/N%C3%BAmero_de_identificaci%C3%B3n_fiscal |
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*/ |
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final class Nif 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($input) |
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{ |
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if (!is_string($input)) { |
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return false; |
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} |
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if (preg_match('/^(\d{8})([A-Z])$/', $input, $matches)) { |
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return $this->validateDni($matches[1], $matches[2]); |
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} |
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if (preg_match('/^([KLMXYZ])(\d{7})([A-Z])$/', $input, $matches)) { |
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return $this->validateNie($matches[1], $matches[2], $matches[3]); |
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} |
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if (preg_match('/^([A-HJNP-SUVW])(\d{7})([0-9A-Z])$/', $input, $matches)) { |
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return $this->validateCif($matches[2], $matches[3]); |
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} |
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return false; |
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} |
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/** |
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* @param int $number |
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* @param int $control |
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*/ |
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private function validateDni($number, $control) |
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{ |
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return mb_substr('TRWAGMYFPDXBNJZSQVHLCKE', ($number % 23), 1) === $control; |
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} |
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/** |
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* @param string $prefix |
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* @param int $number |
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* @param int $control |
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*/ |
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private function validateNie($prefix, $number, $control) |
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{ |
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if ($prefix === 'Y') { |
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return $this->validateDni('1'.$number, $control); |
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} |
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if ($prefix === 'Z') { |
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return $this->validateDni('2'.$number, $control); |
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} |
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return $this->validateDni($number, $control); |
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} |
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/** |
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* @param int $number |
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* @param string $control |
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*/ |
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private function validateCif($number, $control) |
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{ |
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$code = 0; |
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$position = 1; |
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foreach (str_split($number) as $digit) { |
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$increaser = $digit; |
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if ($position % 2 !== 0) { |
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$increaser = array_sum(str_split($digit * 2)); |
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} |
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$code += $increaser; |
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++$position; |
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} |
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$digits = str_split($code); |
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$lastDigit = array_pop($digits); |
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$key = $lastDigit === 0 ? 0 : (10 - $lastDigit); |
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if (is_numeric($control)) { |
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return (int) $key === (int) $control; |
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} |
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return mb_substr('JABCDEFGHI', ($key % 10), 1) === $control; |
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} |
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} |
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