首先搭建环境，建立个ip.PHP.

代码如下：

<?

error_reporting(0);

function GetIP(){
if($_SERVER[‘HTTP_CLIENT_IP‘]){
   $onlineip=$_SERVER[‘HTTP_CLIENT_IP‘];
   }elseif($_SERVER[‘HTTP_X_FORWARDED_FOR‘]){
   $onlineip=$_SERVER[‘HTTP_X_FORWARDED_FOR‘];
   }else{
   $onlineip=$_SERVER[‘REMOTE_ADDR‘];
   }
return $onlineip;
}

?>

再建立个index.PHP

代码如下：

<?PHP

error_reporting(0);

require ‘ip.PHP‘;
   
echo ‘<hr>‘.‘Your IP is ‘.GetIP().‘<br>‘.‘<hr>‘;

/*echo ‘REMOTE_ADDR is ‘.$_SERVER[‘REMOTE_ADDR‘].‘<br>‘;
echo ‘HTTP_CLIENT_IP is  ‘.$_SERVER[‘HTTP_CLIENT_IP‘].‘<br>‘;
echo ‘HTTP_X_FORWARDED_FOR is ‘.$_SERVER[‘HTTP_X_FORWARDED_FOR‘].‘<br>‘;
echo ‘HTTP_VIA is ‘.$_SERVER[‘HTTP_VIA‘];*/

?>

测试

IP显示正确,客户端真实ip是218.241.179.50

去掉index.PHP里面的注释，使用代理观察

 

 

可以看到REMOTE_ADDR方法抓到了代理ip

HTTP_XFORWARDED_FOR还是抓到了客户端的真实IP

接下来编辑curl_Proxy.PHP,示例代码：

<?PHP

error_reporting(0);

function curl_string ($url,$user_agent,$PRoxy){
$ch = curl_init();
curl_setopt ($ch,CURLOPT_PROXY,$proxy);
curl_setopt ($ch,CURLOPT_URL,$url);
curl_setopt ($ch,CURLOPT_USERAGENT,$user_agent);
curl_setopt ($ch,CURLOPT_cookiejar,"d:\cookies.txt");
curl_setopt ($ch,CURLOPT_HEADER,1);
curl_setopt ($ch,CURLOPT_HTTPHEADER,array(‘CLIENT-iP:125.210.188.36‘,‘X-FORWARDED-FOR:125.210.188.36‘));  //此处可以改为任意假IP
curl_setopt ($ch,CURLOPT_RETURNtransfer,CURLOPT_FOLLOWLOCATION,CURLOPT_TIMEOUT,120);

$result = curl_exec ($ch);
curl_close($ch);
return $result;
}
$url_page = "http://s4nd.no-ip.org/test/index.PHP";
$user_agent = "Mozilla/4.0";
$proxy = "http://125.210.188.36:80";    //此处为代理服务器IP和PORT

$string = curl_string($url_page,$proxy);

echo $string;

?>

访问curl_proxy.PHP

 

122.66.*.*是运行脚本服务器的IP，这样就实现了隐藏客户端真实IP的目的。

有的代理服务器会被HTTP_VIA方法侦测到使用了代理服务器，实际上透明代理和高级匿名代理有很大区别。