zlibproxy/vendor/workerman/validation/library/Rules/PerfectSquare.php
2023-01-02 19:56:44 +08:00

38 lines
884 B
PHP

<?php
/*
* This file is part of Respect/Validation.
*
* (c) Alexandre Gomes Gaigalas <alexandre@gaigalas.net>
*
* For the full copyright and license information, please view the LICENSE file
* that was distributed with this source code.
*/
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);
}
}