/**
 *  获取用户ip地址
 *
 * @param 
 * @arrange (512.笔记) jb51.cc
 **/

function getRemoteIPAddress(){
    $ip = isset($_SERVER['REMOTE_ADDR']) ? $_SERVER['REMOTE_ADDR'] : '';
    return $ip;
}
 
/* If your visitor comes from proxy server you have use another function
to get a real IP address: */
function getRealIPAddress(){   
    if(!empty($_SERVER['HTTP_CLIENT_IP'])){
        //check ip from share internet
        $ip = $_SERVER['HTTP_CLIENT_IP'];
    }else if(!empty($_SERVER['HTTP_X_FORWARDED_FOR'])){
        //to check ip is pass from proxy
        $ip = $_SERVER['HTTP_X_FORWARDED_FOR'];
    }else{
        $ip = $_SERVER['REMOTE_ADDR'];
    }
    return $ip;
}


/***   来自编程之家 jb51.cc（jb51.cc）   ***/