38 lines
884 B
PHP
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);
|
||
|
|
}
|
||
|
|
}
|