if (!is_null(filter_input(INPUT_SERVER, "HTTP_X_FORWARDED_FOR", FILTER_SANITIZE_STRING))) {#!empty($_SERVER['HTTP_X_FORWARDED_FOR'])) {
            $clientAddr = filter_input(INPUT_SERVER, "HTTP_X_FORWARDED_FOR", FILTER_SANITIZE_STRING); #$_SERVER['HTTP_X_FORWARDED_FOR'];
        } else {
            $clientAddr = filter_input(INPUT_SERVER, "REMOTE_ADDR", FILTER_SANITIZE_URL); #$_SERVER['REMOTE_ADDR'];
        }