file_get_contents 接收 cookie
在执行 file_get_contents 请求时，是否可以接收远程服务器设置的 cookie?
Is it possible to receive the cookies set by the remote server when doing a file_get_contents request?
我需要 php 来执行 http 请求，存储 cookie，然后使用存储的 cookie 发出第二个 http 请求.
I need php to do a http request, store the cookies, and then make a second http request using the stored cookies.
推荐答案
你应该使用 cURL 为此，cURL 实现了一个叫做 cookie jar 的特性，它允许将 cookie 保存在一个文件中，并在后续请求中重用它们.
you should use cURL for that purpose, cURL implement a feature called the cookie jar which permit to save cookies in a file and reuse them for subsequent request(s).
这里有一个快速的代码片段如何做:
Here come a quick code snipet how to do it:
/* STEP 1. let’s create a cookie file */
$ckfile = tempnam ("/tmp", "CURLCOOKIE");
/* STEP 2. visit the homepage to set the cookie properly */
$ch = curl_init ("http://somedomain.com/");
curl_setopt ($ch, CURLOPT_COOKIEJAR, $ckfile);
curl_setopt ($ch, CURLOPT_RETURNTRANSFER, true);
$output = curl_exec ($ch);
/* STEP 3. visit cookiepage.php */
$ch = curl_init ("http://somedomain.com/cookiepage.php");
curl_setopt ($ch, CURLOPT_COOKIEFILE, $ckfile);
curl_setopt ($ch, CURLOPT_RETURNTRANSFER, true);
$output = curl_exec ($ch);
注意:必须注意，您应该安装 pecl 扩展(或在 PHP 中编译)，否则您将无法访问 cURL API.
note: has to be noted you should have the pecl extension (or compiled in PHP) installed or you won't have access to the cURL API.
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