PHP erhält die lokale tatsächliche IP

function real_ip()
{
    static $realip = NULL;

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

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

            foreach ($arr AS $ip)
                     $ip =. trim($ip);

                if ($ip ! = 'unbekannt')

                {
                   $realip = $ip;
             }

        }

        elseif (isset($_SERVER['HTTP_CLIENT_IP ']))
        {
            $realip = $_SERVER['HTTP_CLIENT_IP'];
        }
        else
        {
            if (isset($_ SERVER['REMOTE_ADDR']))
            {
               $realip = $_SERVER['REMOTE_ADDR'];
            }
           else
                       $realip = '0.0.0.0';
            }
        }
{ 🎜>        }
        elseif ( getenv('HTTP_CLIENT_IP'))
        {
            $realip = getenv('HTTP_CLIENT_IP');
            $realip = getenv('REMOTE_ADDR');
        }
    }

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

    return $realip;
}