[smithygotlost]

Heya guys

Just wondered if it is possible by any means to get someones ip even if they are using a proxy server. like hidemyass.com i only ask as we are offering people rewards to get their link clicked want it to just be once per ip and think that proxies could be a problem. Any Suggestions ?

thanks
Mike

[Nico]

Check the HTTP headers... most proxies send an X_FORWARDED_FOR header containing the real IP, or a list of IPs if the client went through multiple proxies.

[End User]

This is reasonably good, but by no means foolproof:

PHP Code:

    // try and get the real IP address...
    if (getenv('HTTP_CLIENT_IP')) {
        $ip_address = getenv('HTTP_CLIENT_IP');
    }elseif (getenv('HTTP_X_FORWARDED_FOR')) {
        $ip_address = getenv('HTTP_X_FORWARDED_FOR');
    }elseif (getenv('HTTP_X_FORWARDED')) {
        $ip_address = getenv('HTTP_X_FORWARDED');
    }elseif (getenv('HTTP_FORWARDED_FOR')) {
        $ip_address = getenv('HTTP_FORWARDED_FOR');
    }elseif (getenv('HTTP_FORWARDED')) {
        $ip_address = getenv('HTTP_FORWARDED');
    }else {
        $ip_address = $_SERVER['REMOTE_ADDR'];
    }