lab/cacme/vendor/workerman/validation/library/Rules/PerfectSquare.php
2024-08-05 22:57:28 +08:00

34 lines
744 B
PHP

<?php
/*
* Copyright (c) Alexandre Gomes Gaigalas <alganet@gmail.com>
* SPDX-License-Identifier: MIT
*/
declare(strict_types=1);
namespace Respect\Validation\Rules;
use function floor;
use function is_numeric;
use function sqrt;
/**
* Validates whether the input is a perfect square.
*
* @author Danilo Benevides <danilobenevides01@gmail.com>
* @author Henrique Moody <henriquemoody@gmail.com>
* @author Kleber Hamada Sato <kleberhs007@yahoo.com>
* @author Nick Lombard <github@jigsoft.co.za>
*/
final class PerfectSquare extends AbstractRule
{
/**
* {@inheritDoc}
*/
public function validate($input): bool
{
return is_numeric($input) && floor(sqrt((float) $input)) == sqrt((float) $input);
}
}