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* * 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 array_unique; use function is_array; use const SORT_REGULAR; /** * Validates whether the input array contains only unique values. * * @author Henrique Moody
* @author Krzysztof Śmiałek
* @author Paul Karikari
*/ final class Unique extends AbstractRule { /** * {@inheritDoc} */ public function validate($input): bool { if (!is_array($input)) { return false; } return $input == array_unique($input, SORT_REGULAR); } }