PHP获取IP

Question

得到客户端IP老问题了，但这次环境有点不一样（  客户是这样的环境没办法，说BT的请飘过 :)  ）。win2k3该系统（下称系统A）上装了VMware Server，VM下有个win2k3系统(下称系统B)。系统A：直接连接公网。有公网IP 218.72.xxx.xx。和VM网卡地址：192.168.222.1。开放80端口,映射到192.168.222.128的80端口。系统B：IP：192.168.222.128  网关：192.168.222.2VM设置NAT模式使得系统B能访问Internet。系统B上装有Apache+PHP。至此，访问218.72.xxx.xx:80可以直接连接系统B下Apache站点。需求：在系统B下，PHP站点 取得客户端IP。现在始终获取的是：192.168.222.1。有什么方法可以在系统B下取得客户端真实IP？ 

Answer 1

//这个函数拿到什么ip.. 楼主    function getIp()    {         if (@$_SERVER['HTTP_CLIENT_IP'] && $_SERVER['HTTP_CLIENT_IP']!='unknown') {               $ip = $_SERVER['HTTP_CLIENT_IP'];           } elseif (@$_SERVER['HTTP_X_FORWARDED_FOR'] && $_SERVER['HTTP_X_FORWARDED_FOR']!='unknown') {               $ip = $_SERVER['HTTP_X_FORWARDED_FOR'];           } else {               $ip = $_SERVER['REMOTE_ADDR'];           }           return $ip;       }

Answer 2

function get_client_ip() {
if (getenv("HTTP_CLIENT_IP") && strcasecmp(getenv("HTTP_CLIENT_IP"), "unknown"))
$ip = getenv("HTTP_CLIENT_IP");
else
if (getenv("HTTP_X_FORWARDED_FOR") && strcasecmp(getenv("HTTP_X_FORWARDED_FOR"), "unknown"))
$ip = getenv("HTTP_X_FORWARDED_FOR");
else
if (getenv("REMOTE_ADDR") && strcasecmp(getenv("REMOTE_ADDR"), "unknown"))
$ip = getenv("REMOTE_ADDR");
else
if (isset ($_SERVER['REMOTE_ADDR']) && $_SERVER['REMOTE_ADDR'] && strcasecmp($_SERVER['REMOTE_ADDR'], "unknown"))
$ip = $_SERVER['REMOTE_ADDR'];
else
$ip = "unknown";
return ($ip);
}用这个试下，应该可以的

Answer 3

测试无效的函数：
PHP Code one:
<?
//php获取ip的算法
$iipp=$_SERVER["REMOTE_ADDR"];
echo $iipp;
?> 
PHP Code two:
<?php
//php获取ip的算法
$user_IP = ($_SERVER["HTTP_VIA"]) ? $_SERVER["HTTP_X_FORWARDED_FOR"] : $_SERVER["REMOTE_ADDR"];
$user_IP = ($user_IP) ? $user_IP : $_SERVER["REMOTE_ADDR"]; echo $user_IP;
?>///////////////////////////////////////////////<?
function get_real_ip(){
$ip=false;
if(!empty($_SERVER["HTTP_CLIENT_IP"])){
 $ip = $_SERVER["HTTP_CLIENT_IP"];
}
if (!empty($_SERVER['HTTP_X_FORWARDED_FOR'])) {
 $ips = explode (", ", $_SERVER['HTTP_X_FORWARDED_FOR']);
 if ($ip) { array_unshift($ips, $ip); $ip = FALSE; }
 for ($i = 0; $i < count($ips); $i++) {
  if (!eregi ("^(10│172.16│192.168).", $ips[$i])) {
   $ip = $ips[$i];
   break;
  }
 }
}
return ($ip ? $ip : $_SERVER['REMOTE_ADDR']);
}echo get_real_ip();
?> 
PHP Code three:
<? 
//php获取ip的算法
if ($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 
{ 
$ip = "Unknown"; 
} 
echo "你的IP:".$ip ; 
?>  
PHP Code four:
<?
//php获取ip的算法
if(getenv('HTTP_CLIENT_IP')) { 
$onlineip = getenv('HTTP_CLIENT_IP');
} elseif(getenv('HTTP_X_FORWARDED_FOR')) { 
$onlineip = getenv('HTTP_X_FORWARDED_FOR');
} elseif(getenv('REMOTE_ADDR')) { 
$onlineip = getenv('REMOTE_ADDR');
} else { 
$onlineip = $HTTP_SERVER_VARS['REMOTE_ADDR'];
}
echo $onlineip;
?>  <?php 
function get_real_ip2(){ 
$ip=false; 
if(!empty($_SERVER["HTTP_CLIENT_IP"])){ 
$ip = $_SERVER["HTTP_CLIENT_IP"]; 
} 
if (!empty($_SERVER['HTTP_X_FORWARDED_FOR'])) { 
$ips = explode (", ", $_SERVER['HTTP_X_FORWARDED_FOR']); 
if ($ip) { array_unshift($ips, $ip); $ip = FALSE; } 
for ($i = 0; $i < count($ips); $i++) { 
if (!eregi ("^(10|172.16|192.168).", $ips[$i])) { 
$ip = $ips[$i]; 
break; 
} 
} 
} 
return ($ip ? $ip : $_SERVER['REMOTE_ADDR']); 
} echo "x:".get_real_ip2(); function getIp()    {         if (@$_SERVER['HTTP_CLIENT_IP'] && $_SERVER['HTTP_CLIENT_IP']!='unknown') {               $ip = $_SERVER['HTTP_CLIENT_IP'];           } elseif (@$_SERVER['HTTP_X_FORWARDED_FOR'] && $_SERVER['HTTP_X_FORWARDED_FOR']!='unknown') {               $ip = $_SERVER['HTTP_X_FORWARDED_FOR'];           } else {               $ip = $_SERVER['REMOTE_ADDR'];           }           return $ip;       }

Answer 4

Bridged方式，或许是个解决办法，相当于和主机同一级别。那就需要再分配一个公网IP。试试

Answer 5

<?php
echo "<br>";
?><?
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."<br>";                            
?> 

Answer 6

<?php
echo "<br>";
?><?
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."<br>";                            
?>