Search options

function get_remote_address()
{
    $remote_address = isset($_SERVER['SHELL']) ? '127.0.0.1' : $_SERVER['REMOTE_ADDR'];

    // If HTTP_X_FORWARDED_FOR is set, we try to grab the first non-LAN IP
    if (!empty($_SERVER['HTTP_X_FORWARDED_FOR']))
    {
        if (preg_match_all('/[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}/', $_SERVER['HTTP_X_FORWARDED_FOR'], $address_list))
        {
            $lan_ips = array('/^0\./', '/^127\.0\.0\.1/', '/^192\.168\..*/', '/^172\.((1[6-9])|(2[0-9])|(3[0-1]))\..*/', '/^10\..*/', '/^224\..*/', '/^240\..*/');
            $address_list = preg_replace($lan_ips, null, $address_list[0]);

            while (list(, $cur_address) = each($address_list))
            {
                if ($cur_address)
                {
                    $remote_address = $cur_address;
                    break;
                }
            }
        }
    }

    return $remote_address;
}