ip.php

/**
     * 获取客服端ip
     * @return string
     */
    public static function getIp()
    {
        if (!empty($_SERVER['HTTP_CLIENT_IP'])) {
            return $_SERVER['HTTP_CLIENT_IP'];
        } elseif (!empty($_SERVER['HTTP_X_FORVARDED_FOR'])) {
            return $_SERVER['HTTP_X_FORVARDED_FOR'];
        } elseif (!empty($_SERVER['REMOTE_ADDR'])) {
            return $_SERVER['REMOTE_ADDR'];
        } else {
            return "未知IP";
        }
    }