php 获取访客客户端外网ip

class get_gust_info { 
 
 ////获得访客浏览器类型
 function GetBrowser(){
  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 "获取浏览器信息失败！";} 
 }
 
 ////获得访客浏览器语言
 function GetLang(){
  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 "获取浏览器语言失败！";}
 }
 
  ////获取访客操作系统
 function GetOs(){
  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 "获取访客操作系统信息失败！";}   
 }
 
 ////获得访客真实ip
 function Getip(){
  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 = $ip ? $ip : $_SERVER['REMOTE_ADDR']; 
  if($tip=="127.0.0.1"){ //获得本地真实IP
     return $this->get_onlineip();   
  }else{
     return $tip; 
  }
 }
 
 ////获得本地真实IP
 function get_onlineip() {
     $mip = file_get_contents("http://www.ip138.com/ip2city.asp");
  if($mip){
      preg_match("/\[.*\]/",$mip,$sip);
      $p = array("/\[/","/\]/");
      return preg_replace($p,"",$sip[0]);
  }else{return "获取本地IP失败！";}
    }
 
 ////根据ip获得访客所在地地名
 function Getaddress($ip=''){
  if(empty($ip)){
      $ip = $this->Getip();    
  }
  $ipadd = file_get_contents("http://int.dpool.sina.com.cn/iplookup/iplookup.php?ip=".$ip);//根据新浪api接口获取
  if($ipadd){
   $charset = iconv("gbk","utf-8",$ipadd);   
   preg_match_all("/[\x{4e00}-\x{9fa5}]+/u",$charset,$ipadds);
   return $ipadds;   //返回一个二维数组
  }else{return "addree is none";}  
 } 
}
$gifo = new get_gust_info();
echo "你的ip:".$gifo->Getip();
echo "
所在地：";
print_r($gifo->Getaddress());
echo "
浏览器类型：".$gifo->GetBrowser();
echo "
浏览器语言：".$gifo->GetLang();
echo "
操作系统：".$gifo->GetOs();