phpOMS/Validation/Network/Hostname.php

<?php
/**
 * Orange Management
 *
 * PHP Version 7.2
 *
 * @package    phpOMS\Validation\Network
 * @copyright  Dennis Eichhorn
 * @license    OMS License 1.0
 * @version    1.0.0
 * @link       https://orange-management.org
 */
declare(strict_types=1);

namespace phpOMS\Validation\Network;

use phpOMS\Validation\ValidatorAbstract;

/**
 * Validate hostname.
 *
 * @package    phpOMS\Validation\Network
 * @license    OMS License 1.0
 * @link       https://orange-management.org
 * @since      1.0.0
 */
abstract class Hostname extends ValidatorAbstract
{

    /**
     * Constructor.
     *
     * @since  1.0.0
     * @codeCoverageIgnore
     */
    private function __construct()
    {
    }

    /**
     * {@inheritdoc}
     */
    public static function isValid($value, array $constraints = null) : bool
    {
        return \filter_var(\gethostbyname($value), \FILTER_VALIDATE_IP) !== false;
    }
}