本文实例讲述了PHP设置头信息及取得返回头信息的方法。分享给大家供大家参考,具体如下:

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

<?phpfunction 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

<?phpprint_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、取得返回的头信息复制代码 代码如下: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 OKDate: Fri, 27 May 2011 01:57:57 GMTServer: Apache/2.2.16 (Ubuntu)X-Powered-By: PHP/5.3.3-1ubuntu9.5Vary: Accept-EncodingContent-Length: 1045Content-Type: text/htmlArray( [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

<?phpfunction 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($xml) ."" .$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。

更多关于PHP相关内容感兴趣的读者可查看本站专题:《PHP基本语法入门教程》、《php面向对象程序设计入门教程》及《php curl用法总结》

希望本文所述对大家PHP程序设计有所帮助。