PHP는 로컬 실제 IP를 얻습니다

함수 real_ip()
{
    static $realip = NULL;

    if ($realip !== NULL)
    {
        return $realip;
    }

    if (isset($_SERVER))
    {
        if (isset($_SERVER['HTTP_X_FORWARDED_FOR']))
        {
            $arr = 폭발(',', $_SERVER['HTTP_X_FORWARDED_FOR']);

            foreach ($arr AS $ip)
            {
               $ip = Trim($ip);

                if ($ip ! = '알 수 없음')

               {
                  $realip = $ip;

                  break;

                }
            }
        }
        elseif (isset($_SERVER['HTTP_CLIENT_IP ']))
        {
            $realip = $_SERVER['HTTP_CLIENT_IP'];
        }
        else
        {
            if (isset($_ 서버['REMOTE_ADDR']))
           {
                $realip = $_SERVER['REMOTE_ADDR'];
           }
           else
           {
                $realip = '0.0.0.0';
            }
        }
    }
    else
    {
        if (getenv('HTTP_X_FORWARDED_FOR'))
        {
           $realip = getenv('HTTP_X_FORWARDED_FOR');
        }
        elseif( 도착     $realip = getenv('REMOTE_ADDR');
        }
    }

    preg_match("/[d.]{7,15}/", $realip, $onlineip);
    $realip = !empty($onlineip[0] ) ? $onlineip[0] : '0.0.0.0';

    return $realip;
}