function get_user_ip_address() {
    $client = @$_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;
}