php怎么得到本机的ip地址？O(∩_∩)O

 
   echo " 
"; 
 ?> 
  
    
 function GetIP() 
 { 
 if(!empty($_SERVER["HTTP_CLIENT_IP"])) 
  $cip = $_SERVER["HTTP_CLIENT_IP"]; 
 else if(!empty($_SERVER["HTTP_X_FORWARDED_FOR"])) 
  $cip = $_SERVER["HTTP_X_FORWARDED_FOR"]; 
 else if(!empty($_SERVER["REMOTE_ADDR"])) 
  $cip = $_SERVER["REMOTE_ADDR"]; 
 else 
  $cip = "无法获取！"; 
 return $cip; 
 } 
 echo " 
"; 
 ?> 
  
 方法二： 
   echo " 
"; 
 ?> 
  
   error_reporting (E_ERROR | E_WARNING | E_PARSE); 
 if($HTTP_SERVER_VARS["HTTP_X_FORWARDED_FOR"])  
 {                         
    $ip = $HTTP_SERVER_VARS["HTTP_X_FORWARDED_FOR"]; 
    
 }                         
 elseif($HTTP_SERVER_VARS["HTTP_CLIENT_IP"])   
 {                         
    $ip = $HTTP_SERVER_VARS["HTTP_CLIENT_IP"]; 
       
 }                         
 elseif ($HTTP_SERVER_VARS["REMOTE_ADDR"])      
 {                         
    $ip = $HTTP_SERVER_VARS["REMOTE_ADDR"];   
        
 }                         
 elseif (getenv("HTTP_X_FORWARDED_FOR"))       
 {                         
    $ip = getenv("HTTP_X_FORWARDED_FOR");   
         
 }                         
 elseif (getenv("HTTP_CLIENT_IP"))         
 {                         
    $ip = getenv("HTTP_CLIENT_IP");   
             
 }       
                   
 elseif (getenv("REMOTE_ADDR"))            
 {                         
    $ip = getenv("REMOTE_ADDR");  
              
 }      
                    
 else                        
 {                         
    $ip = "Unknown";   
                   
 }                         
 echo "你的IP地址是:".$ip." 
";               
 ?>  
  
  
 方法三（最简单）： 
   echo " 
"; 
 ?> 
  
   $iipp = $_SERVER["REMOTE_ADDR"]; 
 echo $iipp; 
 echo " 
";