Get Real IP

<?php
/*---------------------------------------------------------------------- 
  Function      : getIP 
  Desciption : IP adress van clients ophalen 
  Usage      : getIP() 
  Arguments   : In: void 
                     : Out: String $ip (client ip adress of "0.0.0.0" when no IP is found) 
---------------------------------------------------------------------- */ 
function getIP()  
{ 
    if(!empty($_SERVER['HTTP_CLIENT_IP'])) 
    { 
        $ip = $_SERVER['HTTP_CLIENT_IP']; 
    } 
    elseif (!empty($_SERVER['HTTP_X_FORWARDED_FOR'])) 
    { 
        $ips = explode (",", $_SERVER['HTTP_X_FORWARDED_FOR']); 
        for ($i = 0; $i < count($ips); $i++)  
        { 
            $ips[$i] = trim($ips[$i]); 
            if (!eregi("^(10|172\.16|192\.168)\.", $ips[$i])) 
            { 
                    $ip = $ips[$i]; 
                    break; 
            } 
        } 
    } 
    elseif (!empty($_SERVER['HTTP_VIA']))  
    { 
        $ips = explode (",", $_SERVER['HTTP_VIA']); 
        for ($i = 0; $i < count($ips); $i++)  
        { 
            $ips[$i] = trim($ips[$i]); 
            if (!eregi ("^(10|172\.16|192\.168)\.", $ips[$i]))  
            { 
                    $ip = $ips[$i]; 
                    break; 
            } 
        } 
    } 
    elseif(!empty($_SERVER['REMOTE_ADDR'])) 
    { 
        $ip = $_SERVER['REMOTE_ADDR']; 
    } 
    else 
    { 
        $ip = "0.0.0.0";  
    } 
    return $ip; 
}
?>