/*

     * 获取当前服务器的IP

     */

    function get_client_ip()

    {

        if ($_SERVER['REMOTE_ADDR']) {

            $cip = $_SERVER['REMOTE_ADDR'];

        } elseif (getenv("REMOTE_ADDR")) {

            $cip = getenv("REMOTE_ADDR");

        } elseif (getenv("HTTP_CLIENT_IP")) {

            $cip = getenv("HTTP_CLIENT_IP");

        } else {

            $cip = "unknown";

        }

        return $cip;

    }