PHP获取客户端操作系统，浏览器，语言，IP，IP归属地等

 <?php
 class Client
 {
   ////获得访客浏览器类型
     function Get_Browser(){
         if(!empty($_SERVER['HTTP_USER_AGENT'])){
             $br = $_SERVER['HTTP_USER_AGENT'];
             if (preg_match('/MSIE/i',$br)) {
                 $br = 'MSIE';
             }
             elseif (preg_match('/Firefox/i',$br)) {
                  $br = 'Firefox';
             }
             elseif (preg_match('/Chrome/i',$br)) {
                  $br = 'Chrome';
                }
                elseif (preg_match('/Safari/i',$br)) {
                  $br = 'Safari';
             }
             elseif (preg_match('/Opera/i',$br)) {
                 $br = 'Opera';
             }else {
                 $br = 'Other';
             }
             return $br;
            }
            else{
                return "unknow";
            }
   }

   ////获得访客浏览器语言
     function Get_Lang(){
         if(!empty($_SERVER['HTTP_ACCEPT_LANGUAGE'])){
             $lang = $_SERVER['HTTP_ACCEPT_LANGUAGE'];
                 $lang = substr($lang,0,5);
             if(preg_match("/zh-cn/i",$lang)){
                  $lang = "简体中文";
             }
             elseif(preg_match("/zh/i",$lang)){
                  $lang = "繁体中文";
             }
             else{
                     $lang = "English";
             }
             return $lang;
            }
            else{
                return "unknow";
            }
   }

    ////获取访客操作系统
     function Get_Os(){
            if(!empty($_SERVER['HTTP_USER_AGENT'])){
             $OS = $_SERVER['HTTP_USER_AGENT'];
               if (preg_match('/win/i',$OS)) {
                  $OS = 'Windows';
             }
             elseif (preg_match('/mac/i',$OS)) {
                  $OS = 'MAC';
             }
             elseif (preg_match('/linux/i',$OS)) {
                  $OS = 'Linux';
             }
             elseif (preg_match('/unix/i',$OS)) {
                  $OS = 'Unix';
             }
             elseif (preg_match('/bsd/i',$OS)) {
                  $OS = 'BSD';
             }
             else {
                  $OS = 'Other';
             }
             return $OS;
            }
            else{
                return "unknow";
            }
   }

   ////获得访客真实ip
     function Get_Ip_Addr(){
            if(!empty($_SERVER["HTTP_CLIENT_IP"])){
               $ip = $_SERVER["HTTP_CLIENT_IP"];
            }
            if(!empty($_SERVER['HTTP_X_FORWARDED_FOR'])){ //获取代理ip
             $ips = explode(',',$_SERVER['HTTP_X_FORWARDED_FOR']);
            }
            if($ip){
               $ips = array_unshift($ips,$ip);
            }
            $count = count($ips);
         for($i=0;$i<$count;$i++){
              if(!preg_match("/^(10|172\.16|192\.168)\./i",$ips[$i])){//排除局域网ip
                   $ip = $ips[$i];
                   break;
               }
         }
            $tip = empty($_SERVER['REMOTE_ADDR']) ? $ip : $_SERVER['REMOTE_ADDR'];
            if($tip=="127.0.0.1"){ //获得本地真实IP
               return self::get_onlineip();
            }
            else{
               return $tip;
            }
   }

   ////获得本地真实IP
   function get_onlineip() {
         $ip_json = @file_get_contents("http://ip.taobao.com/service/getIpInfo.php?ip=myip");
         $ip_arr=json_decode(stripslashes($ip_json),1);
         if($ip_arr['code']==0)
         {
             return $ip_arr['data']['ip'];
         }

    }

   ////根据ip获得访客所在地地名
     function Get_Ip_From($ip=''){
         if(empty($ip)){
             $ip = self::Getip();
         }
            $ip_json=@file_get_contents("http://ip.taobao.com/service/getIpInfo.php?ip=".$ip);//根据taobao ip
            $ip_arr=json_decode(stripslashes($ip_json),1);
            if($ip_arr['code']==0)
            {
                return $ip_arr;
            }
            else
            {
                return false;
            }

     } 

 }