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20 lines
461 B
PHP
20 lines
461 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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namespace Respect\Validation\Rules;
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class PerfectSquare extends AbstractRule
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{
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public function validate($input)
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{
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return is_numeric($input) && sqrt($input) * sqrt($input) == $input;
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}
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}
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