<?php

if (!empty($_SERVER["HTTP_CLIENT_IP"]))

{

 //check for ip from share internet

 $ip = $_SERVER["HTTP_CLIENT_IP"];

}

elseif (!empty($_SERVER["HTTP_X_FORWARDED_FOR"]))

{

 // Check for the Proxy User

 $ip = $_SERVER["HTTP_X_FORWARDED_FOR"];

}

else

{

 $ip = $_SERVER["REMOTE_ADDR"];

}

// This will print user's real IP Address

// does't matter if user using proxy or not.

echo $ip;

?>