mirror of
https://github.com/Respect/Validation.git
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37 lines
858 B
PHP
37 lines
858 B
PHP
<?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 <alexandre@gaigalas.net>
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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 DateTimeInterface;
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class LeapYear extends AbstractRule
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{
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public function validate($year): bool
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{
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if (is_numeric($year)) {
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$year = (int) $year;
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} elseif (is_string($year)) {
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$year = (int) date('Y', (int) strtotime($year));
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} elseif ($year instanceof DateTimeInterface) {
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$year = (int) $year->format('Y');
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} else {
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return false;
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}
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$date = strtotime(sprintf('%d-02-29', $year));
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return (bool) date('L', (int) $date);
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}
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}
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