HighSpeaker/vendor/workerman/validation/library/Rules/Lowercase.php

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<?php
/*
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* Copyright (c) Alexandre Gomes Gaigalas <alganet@gmail.com>
* SPDX-License-Identifier: MIT
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*/
declare(strict_types=1);
namespace Respect\Validation\Rules;
use function is_string;
use function mb_strtolower;
/**
* Validates whether the characters in the input are lowercase.
*
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* @author Alexandre Gomes Gaigalas <alganet@gmail.com>
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* @author Danilo Benevides <danilobenevides01@gmail.com>
* @author Henrique Moody <henriquemoody@gmail.com>
* @author Jean Pimentel <jeanfap@gmail.com>
*/
final class Lowercase extends AbstractRule
{
/**
* {@inheritDoc}
*/
public function validate($input): bool
{
if (!is_string($input)) {
return false;
}
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return $input === mb_strtolower($input);
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}
}