ip.php

<?php 

function get_client_ip() {
     $ipaddress = '';
     if (isset($_SERVER['HTTP_CLIENT_IP']))
         $ipaddress = $_SERVER['HTTP_CLIENT_IP'];
     else if(isset($_SERVER['HTTP_X_FORWARDED_FOR']))
         $ipaddress = $_SERVER['HTTP_X_FORWARDED_FOR'];
     else if(isset($_SERVER['HTTP_X_FORWARDED']))
         $ipaddress = $_SERVER['HTTP_X_FORWARDED'];
     else if(isset($_SERVER['HTTP_FORWARDED_FOR']))
         $ipaddress = $_SERVER['HTTP_FORWARDED_FOR'];
     else if(isset($_SERVER['HTTP_FORWARDED']))
         $ipaddress = $_SERVER['HTTP_FORWARDED'];
     else if(isset($_SERVER['REMOTE_ADDR']))
         $ipaddress = $_SERVER['REMOTE_ADDR'];
  
    return $ipaddress; 
}