IsoCodes\IP::validate PHP Метод

    public static function validate($ipv4)
    {
        return false !== filter_var($ipv4, FILTER_VALIDATE_IP, FILTER_FLAG_IPV4);
    }

 /**
  * testInvalidIPV6s
  *
  * @param mixed $ip
  *
  * @dataProvider getInvalidIPV4s
  *
  * @return void
  */
 public function testInvalidIPV4s($ip)
 {
     $this->assertFalse(IP::validate($ip));
 }