PHP开发设置http头信息，取得返回头信息
设置请求的头信息，我们可以用header函数，可以用fsockopen,可以用curl等，本文主要讲的是用curl来设置头信息，并取得返回后的头信息。
一，请求方设置自己的头信息，header.php
- <?php
- function FormatHeader($url, $myIp = null,$xml = null)
- {
- // 解悉url
- $temp = parse_url($url);
- $query = isset($temp[‘query’]) ? $temp[‘query’] : ”;
- $path = isset($temp[‘path’]) ? $temp[‘path’] : ‘/’;
- $header = array (
- “POST {$path}?{$query} HTTP/1.1”,
- “Host: {$temp[‘host’]}”,
- “Content-Type: text/xml; charset=utf-8”,
- ‘Accept: */*’,
- “Referer: http://{$temp[‘host’]}/”,
- ‘User-Agent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; SV1)’,
- “X-Forwarded-For: {$myIp}”,
- “Content-length: 380”,
- “Connection: Close”
- );
- return $header;
- }
- $interface = ‘http://localhost/test/header2.php’;
- $header = FormatHeader($interface,’10.1.11.1′);
- $ch = curl_init();
- curl_setopt($ch, CURLOPT_URL, $interface);
- curl_setopt($ch, CURLOPT_HTTPHEADER, $header); //设置头信息的地方
- curl_setopt($ch, CURLOPT_HEADER, 0); //不取得返回头信息
- curl_setopt($ch, CURLOPT_TIMEOUT, 5);
- curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
- $result = curl_exec($ch);
- var_dump($result);
- ?>
二，被请求方，取得头信息，header2.php
- <?php
- print_r($_SERVER); //头信息里面有内容绝大部分是放在系统变量里面的
- ?>
三，看一下header.php请求的结果
string(1045) “Array
(
[HTTP_HOST] => localhost
[CONTENT_TYPE] => text/xml; charset=utf-8
[HTTP_ACCEPT] => */*
[HTTP_REFERER] => http://localhost/
[HTTP_USER_AGENT] => Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; SV1)
[HTTP_X_FORWARDED_FOR] => 10.1.11.1
[CONTENT_LENGTH] => 380
[PATH] => /usr/local/bin:/usr/bin:/bin
[SERVER_SIGNATURE] => <address>Apache/2.2.16 (Ubuntu) Server at localhost Port 80</address>
。。。。。。。。。。。。。。。。。。。。。。。。。。。。
)
上面那几个，我们可以明显看到，是我设置的头信息。
四，取得返回的头信息
- curl_setopt($ch, CURLOPT_HEADER, 1); //取得返回头信息
我们把CURLOPT_HEADER设置成1，在取得的结果当中，显示数组的前面会有这些信息
- string(1239) “HTTP/1.1 200 OK
- Date: Fri, 27 May 2011 01:57:57 GMT
- Server: Apache/2.2.16 (Ubuntu)
- X-Powered-By: PHP/5.3.3-1ubuntu9.5
- Vary: Accept-Encoding
- Content-Length: 1045
- Content-Type: text/html
- Array
- (
- [HTTP_HOST] => localhost
- [CONTENT_TYPE] => text/xml; charset=utf-8
- [HTTP_ACCEPT] => */*
- 。。。。。。。。。。。。。。。。
五，$_SERVER部分头信息是拿不到的
修改一下header.php
- <?php
- function FormatHeader($url, $myIp = null,$xml = null)
- {
- // 解悉url
- $temp = parse_url($url);
- $query = isset($temp[‘query’]) ? $temp[‘query’] : ”;
- $path = isset($temp[‘path’]) ? $temp[‘path’] : ‘/’;
- $header = array (
- “POST {$path}?{$query} HTTP/1.1”,
- “Host: {$temp[‘host’]}”,
- “Content-Type: text/xml; charset=utf-8”,
- ‘Accept: */*’,
- “Referer: http://{$temp[‘host’]}/”,
- ‘User-Agent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; SV1)’,
- “X-Forwarded-For: {$myIp}”,
- “Content-length: ” . strlen($xml) .”\r\n\r\n” .$xml, //修改1
- “Connection: Close”
- );
- return $header;
- }
- $xml = ‘<?xml version=”1.0″ encoding=”utf-8″?> //修改2
- <profile>
- <sha1>adsfadsf</sha1>
- <user_id>asdfasdf</user_id>
- <album_id>asdf</album_id>
- <album_name>asdf</album_name>
- <tags>asdfasd</tags>
- <title>asdfasdf</title>
- <content>asdfadsf</content>
- <type>asdfasdf</type>
- <copyright>asdfasdf</copyright>
- </profile>’;
- $interface = ‘http://localhost/test/header2.php’;
- $header = FormatHeader($interface,’10.1.11.1′,$xml); //修改3
- $ch = curl_init();
- curl_setopt($ch, CURLOPT_URL, $interface);
- curl_setopt($ch, CURLOPT_HTTPHEADER, $header); //设置头信息的地方
- curl_setopt($ch, CURLOPT_HEADER, 0); //不取得返回头信息
- curl_setopt($ch, CURLOPT_TIMEOUT, 5);
- curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
- $result = curl_exec($ch);
- var_dump($result);
- ?>
如果这样的话，header2.php里面，打印$_SERVER不可能把头信息中的xml打印出来。这个时候，我们在header2.php后面加上以下二行
- $raw_post_data = file_get_contents(‘php://input’, ‘r’);
- var_dump($raw_post_data);
这样就可以取到$xml的内容，并且只会取$xml的内容。
原作者:海底苍鹰