PHP curl : problem setting HTTP_HOST

Question

我已经使用 php 和curl 设置了内部代理。大部分工作已完成，但是，我在设置 HTTP_HOST header 字段时遇到问题。这是我正在使用的代码:

---

代理服务器上的代码::

$data_server_url = "http://IP_ADDRESS_OF_MY_CONTENT_SERVER/";
$request_uri="";
if(isset($_SERVER['REQUEST_URI'])) { $request_uri = $_SERVER['REQUEST_URI']; };
$curl_url="${data_server_url}${request_uri}";

//Pass all these fields as-they-are-got from the client to the content server.
$field_array=array("HTTP_ACCEPT", "HTTP_ACCEPT_CHARSET",
      "HTTP_ACCEPT_ENCODING", "HTTP_ACCEPT_LANGUAGE", "HTTP_CONNECTION",
      "HTTP_HOST", "HTTP_REFERER", "HTTP_USER_AGENT");

$curl_request_headers=array();

foreach ($field_array as &$field) {
   if(isset($_SERVER["$field"])) {
      $curl_request_headers["$field"]=$_SERVER["$field"];
   } else {
      $curl_request_headers["$field"]="";
   };
};

//Open connection
$curl_handle = curl_init();
//Set the url, number of POST vars, POST data
curl_setopt($curl_handle, CURLOPT_URL, $curl_url);
curl_setopt($curl_handle, CURLOPT_POST, count($_POST));
curl_setopt($curl_handle, CURLOPT_POSTFIELDS, $_POST);
curl_setopt($curl_handle, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($curl_handle, CURLOPT_AUTOREFERER, TRUE);
curl_setopt($curl_handle, CURLOPT_HTTPHEADER, $curl_request_headers);
//Execute post
$result = curl_exec($curl_handle);
//Close connection
curl_close($curl_handle);

---

但是，在我的内容服务器上，$_SERVER['HTTP_HOST'] 设置为其自己的 IP 地址(它应该为 null 或通过其访问代理服务器的 HTTP_HOST 变量)。

谁能建议解决办法是什么？

Answer 1

来自the documentation :

value should be an array for the following values of the option parameter:

     ...

CURLOPT_HTTPHEADER    An array of HTTP header fields to set, in the format
                       array('Content-type: text/plain', 'Content-length: 100')

所以，是的，我认为你没有正确设置它们。