{dede:php} 

$user_IP = ($_SERVER["HTTP_VIA"]) ? $_SERVER["HTTP_X_FORWARDED_FOR"] : $_SERVER["REMOTE_ADDR"];  

$user_IP = ($user_IP) ? $user_IP : $_SERVER["REMOTE_ADDR"];  

function get_real_ip(){  

$ip=false;  

if(!emptyempty($_SERVER["HTTP_CLIENT_IP"])){  

$ip = $_SERVER["HTTP_CLIENT_IP"];  

}  

if (!emptyempty($_SERVER['HTTP_X_FORWARDED_FOR'])) {  

$ips = explode (", ", $_SERVER['HTTP_X_FORWARDED_FOR']);  

if ($ip) { array_unshift($ips, $ip); $ip = FALSE; }  

for ($i = 0; $i < count($ips); $i++) {  

if (!eregi ("^(10│172.16│192.168).", $ips[$i])) {  

$ip = $ips[$i];  

break;  

}  

}  

}  

return ($ip ? $ip : $_SERVER['REMOTE_ADDR']);  

}  

echo "YOUR IP "." ". get_real_ip(); 

{/dede:php}