respect-validation/library/Rules/NullType.php
Henrique Moody ad9cab5daf
Apply contribution guidelines to "NullType" rule
Signed-off-by: Henrique Moody <henriquemoody@gmail.com>
2018-03-27 00:32:05 +02:00

34 lines
670 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.md"
* file that was distributed with this source code.
*/
declare(strict_types=1);
namespace Respect\Validation\Rules;
use function is_null;
/**
* Validates whether the input is null.
*
* @author Alexandre Gomes Gaigalas <alexandre@gaigalas.net>
* @author Henrique Moody <henriquemoody@gmail.com>
*/
final class NullType extends NotEmpty
{
/**
* {@inheritdoc}
*/
public function validate($input): bool
{
return is_null($input);
}
}