Magento showing wrong customer ip

Question

I have a US based website when customer placed order, in their order "Placed from IP" showing my ip in each order also, I have few custom module for tracking order and user activity in these modules ip is showing mine. it's strange.I am not found the issue.Also when i'm printing ip from root folder then it's working fine.

My module code :

function getUserIP()
    {
        $client  = @$_SERVER['HTTP_CLIENT_IP'];
        $forward = @$_SERVER['HTTP_X_FORWARDED_FOR'];
        $remote  = $_SERVER['REMOTE_ADDR'];

        if(filter_var($client, FILTER_VALIDATE_IP))
        {
            $ip = $client;
        }
        elseif(filter_var($forward, FILTER_VALIDATE_IP))
        {
            $ip = $forward;
        }
        else
        {
            $ip = $remote;
        }
        return $ip;
    }

But my concern is Magento default sales/order code should be run fine.

Answer 1

I have fixed the above my issue.

There was a code placed in index.php

if($_SERVER['REMOTE_ADDR'] = '202.164.34.112'){
    Mage::setIsDeveloperMode(true);
    ini_set('display_errors', 1);
} 

I have commented this piece of code and all the thing are working fine now.