获取客户端真是IP地址

  

   

    

     

    
    

     

      function get_client_ip($type = 0,$client=true)
     
    
   

    

     

    
    

     

          {
     
    
   

    

     

    
    

     
        $type       =  $type ? 1 : 0;
     
    
   

    

     

    
    

     
        static $ip  =   NULL;
     
    
   

    

     

    
    

     
        if ($ip !== NULL) return $ip[$type];
     
    
   

    

     

    
    

     
        if($client){
     
    
   

    

     

    
    

     
            if (isset($_SERVER['HTTP_X_FORWARDED_FOR'])) {
     
    
   

    

     

    
    

     
                $arr    =   explode(',', $_SERVER['HTTP_X_FORWARDED_FOR']);
     
    
   

    

     

    
    

     
                $pos    =   array_search('unknown',$arr);
     
    
   

    

     

    
    

     
                if(false !== $pos) unset($arr[$pos]);
     
    
   

    

     

    
    

     
                $ip     =   trim($arr[0]);
     
    
   

    

     

    
    

     

                  }elseif (isset($_SERVER['HTTP_CLIENT_IP'])) {
     
    
   

    

     

    
    

     
                $ip     =   $_SERVER['HTTP_CLIENT_IP'];
     
    
   

    

     

    
    

     

                  }elseif (isset($_SERVER['REMOTE_ADDR'])) {
     
    
   

    

     

    
    

     
                $ip     =   $_SERVER['REMOTE_ADDR'];
     
    
   

    

     

    
    

     

                  }
     
    
   

    

     

    
    

     

              }elseif (isset($_SERVER['REMOTE_ADDR'])) {
     
    
   

    

     

    
    

     
            $ip     =   $_SERVER['REMOTE_ADDR'];
     
    
   

    

     

    
    

     

              }
     
    
   

    

     

    
    

     
        // 防止IP伪造
     
    
   

    

     

    
    

     
        $long = sprintf("%u",ip2long($ip));
     
    
   

    

     

    
    

     
        $ip   = $long ? array($ip, $long) : array('0.0.0.0', 0);
     
    
   

    

     

    
    

     
        return $ip[$type];
     
    
   

    

     

    
    

     

          }
     
    
  
 

文章来源: blog.csdn.net，作者：咔咔-，版权归原作者所有，如需转载，请联系作者。

原文链接：blog.csdn.net/fangkang7/article/details/82757779