51 lines
1.1 KiB
PHP
51 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 DateTimeInterface;
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use function date;
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use function is_numeric;
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use function is_scalar;
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use function sprintf;
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use function strtotime;
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/**
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* Validates if a year is leap.
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*
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* @author Danilo Correa <danilosilva87@gmail.com>
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* @author Henrique Moody <henriquemoody@gmail.com>
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* @author Jayson Reis <santosdosreis@gmail.com>
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*/
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final class LeapYear 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($input): bool
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{
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if (is_numeric($input)) {
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$date = strtotime(sprintf('%d-02-29', (int) $input));
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return (bool) date('L', (int) $date);
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}
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if (is_scalar($input)) {
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return $this->validate((int) date('Y', (int) strtotime((string) $input)));
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}
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if ($input instanceof DateTimeInterface) {
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return $this->validate($input->format('Y'));
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}
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return false;
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}
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}
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