php如何设置头信息，如何取得返回头信息

网络整理 - 08-01

php中如何设置头信息，如何取得返回头信息？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

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1.<?php
2.function FormatHeader($url, $myIp = null,$xml = null)
3.{
4. // 解悉url
5. $temp = parse_url($url);
6. $query = isset($temp['query']) ? $temp['query'] : '';
7. $path = isset($temp['path']) ? $temp['path'] : 'http://www.cuoxin.com/';
8.
9. $header = array (
10. "POST {$path}?{$query} HTTP/1.1",
11. "Host: {$temp['host']}",
12. "Content-Type: text/xml; charset=utf-8",
13. 'Accept: */*',
14. "Referer: {$temp['host']}/",
15. 'User-Agent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; SV1)',
16. "X-Forwarded-For: {$myIp}",
17. "Content-length: 380",
18. "Connection: Close"
19. );
20.
21. return $header;
22.}
23.
24.$interface = 'http://localhost/test/header2.php';
25.$header = FormatHeader($interface,'10.1.11.1');
26.
27.$ch = curl_init();
28.curl_setopt($ch, CURLOPT_URL, $interface);
29.curl_setopt($ch, CURLOPT_HTTPHEADER, $header); //设置头信息的地方
30.curl_setopt($ch, CURLOPT_HEADER, 0);    //不取得返回头信息
31.curl_setopt($ch, CURLOPT_TIMEOUT, 5);
32.curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
33.$result = curl_exec($ch);
34.
35.var_dump($result);
36.?>
<?php
function FormatHeader($url, $myIp = null,$xml = null)
{
// 解悉url
$temp = parse_url($url);
$query = isset($temp['query']) ? $temp['query'] : '';
$path = isset($temp['path']) ? $temp['path'] : 'http://www.cuoxin.com/';

$header = array (
"POST {$path}?{$query} HTTP/1.1",
"Host: {$temp['host']}",
"Content-Type: text/xml; charset=utf-8",
'Accept: */*',
"Referer: {$temp['host']}/",
'User-Agent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; SV1)',
"X-Forwarded-For: {$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

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1.<?php
2.print_r($_SERVER);    //头信息里面有内容绝大部分是放在系统变量里面的
3.?>
<?php
print_r($_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_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

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1.curl_setopt($ch, CURLOPT_HEADER, 1); //取得返回头信息
curl_setopt($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

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1.string(1239) "HTTP/1.1 200 OK
2.Date: Fri, 27 May 2011 01:57:57 GMT
3.Server: Apache/2.2.16 (Ubuntu)
4.X-Powered-By: PHP/5.3.3-1ubuntu9.5
5.Vary: Accept-Encoding
6.Content-Length: 1045
7.Content-Type: text/html
8.
9.Array
10.(
11. [HTTP_HOST] => localhost
12. [CONTENT_TYPE] => text/xml; charset=utf-8
13. [HTTP_ACCEPT] => */*
14. 。。。。。。。。。。。。。。。。
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

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1.<?php
2.function FormatHeader($url, $myIp = null,$xml = null)
3.{
4. // 解悉url
5. $temp = parse_url($url);
6. $query = isset($temp['query']) ? $temp['query'] : '';
7. $path = isset($temp['path']) ? $temp['path'] : 'http://www.cuoxin.com/';
8.
9. $header = array (
10. "POST {$path}?{$query} HTTP/1.1",
11. "Host: {$temp['host']}",
12. "Content-Type: text/xml; charset=utf-8",
13. 'Accept: */*',
14. "Referer: {$temp['host']}/",
15. 'User-Agent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; SV1)',
16. "X-Forwarded-For: {$myIp}",
17. "Content-length: " . strlen($xml) ."\r\n\r\n" .$xml, //修改1
18. "Connection: Close"
19. );
20.
21. return $header;
22.}
23.
24.$xml = '<?xml version="1.0" encoding="utf-8"?>   //修改2
25. <profile>
26. <sha1>adsfadsf</sha1>
27. <user_id>asdfasdf</user_id>
28. <album_id>asdf</album_id>
29. <album_name>asdf</album_name>
30. <tags>asdfasd</tags>
31. <title>asdfasdf</title>
32. <content>asdfadsf</content>
33. <type>asdfasdf</type>
34. <copyright>asdfasdf</copyright>
35. </profile>';
36.
37.$interface = 'http://localhost/test/header2.php';
38.$header = FormatHeader($interface,'10.1.11.1',$xml); //修改3
39.
40.$ch = curl_init();
41.curl_setopt($ch, CURLOPT_URL, $interface);
42.curl_setopt($ch, CURLOPT_HTTPHEADER, $header); //设置头信息的地方
43.curl_setopt($ch, CURLOPT_HEADER, 0);    //不取得返回头信息
44.curl_setopt($ch, CURLOPT_TIMEOUT, 5);
45.curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
46.$result = curl_exec($ch);
47.
48.var_dump($result);
49.?>
<?php
function FormatHeader($url, $myIp = null,$xml = null)
{
// 解悉url
$temp = parse_url($url);
$query = isset($temp['query']) ? $temp['query'] : '';
$path = isset($temp['path']) ? $temp['path'] : 'http://www.cuoxin.com/';

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

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

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1.$raw_post_data = file_get_contents('php://input', 'r');
2.var_dump($raw_post_data);
$raw_post_data = file_get_contents('php://input', 'r');
var_dump($raw_post_data);这样就可以取到$xml的内容，并且只会取$xml的内容。