100 lines
2.6 KiB
PHP
100 lines
2.6 KiB
PHP
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<?php
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/*
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* Copyright (c) Alexandre Gomes Gaigalas <alganet@gmail.com>
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* SPDX-License-Identifier: MIT
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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_pop;
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use function array_sum;
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use function is_numeric;
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use function is_string;
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use function mb_substr;
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use function preg_match;
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use function str_split;
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/**
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* Validates Spain's fiscal identification number (NIF).
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*
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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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* @author Henrique Moody <henriquemoody@gmail.com>
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* @author Julián Gutiérrez <juliangut@gmail.com>
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* @author Senén <senen@instasent.com>
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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($input): bool
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{
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if (!is_string($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((int) $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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private function validateDni(int $number, string $control): bool
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{
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return mb_substr('TRWAGMYFPDXBNJZSQVHLCKE', $number % 23, 1) === $control;
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}
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private function validateNie(string $prefix, string $number, string $control): bool
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{
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if ($prefix === 'Y') {
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return $this->validateDni((int) ('1' . $number), $control);
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}
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if ($prefix === 'Z') {
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return $this->validateDni((int) ('2' . $number), $control);
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}
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return $this->validateDni((int) $number, $control);
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}
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private function validateCif(string $number, string $control): bool
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{
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$code = 0;
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$position = 1;
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/** @var int $digit */
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foreach (str_split($number) as $digit) {
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$increaser = $digit;
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if ($position % 2 !== 0) {
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$increaser = array_sum(str_split((string) ($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((string) $code);
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$lastDigit = (int) 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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