46 lines
1.1 KiB
PHP
46 lines
1.1 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 implode;
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use function is_scalar;
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use function preg_match;
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use function sprintf;
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/**
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* Validates whether the input is a valid ISBN (International Standard Book Number) or not.
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*
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* @author Henrique Moody <henriquemoody@gmail.com>
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* @author Moritz Fromm <moritzgitfromm@gmail.com>
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*/
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final class Isbn extends AbstractRule
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{
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/**
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* @see https://howtodoinjava.com/regex/java-regex-validate-international-standard-book-number-isbns
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*/
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private const PIECES = [
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'^(?:ISBN(?:-1[03])?:? )?(?=[0-9X]{10}$|(?=(?:[0-9]+[- ]){3})',
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'[- 0-9X]{13}$|97[89][0-9]{10}$|(?=(?:[0-9]+[- ]){4})[- 0-9]{17}$)',
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'(?:97[89][- ]?)?[0-9]{1,5}[- ]?[0-9]+[- ]?[0-9]+[- ]?[0-9X]$',
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];
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/**
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* {@inheritDoc}
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*/
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public function validate($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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return preg_match(sprintf('/%s/', implode(self::PIECES)), (string) $input) > 0;
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}
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}
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