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PHP獲取http請求的頭信息實(shí)現(xiàn)步驟

更新時(shí)間：2012年12月16日 14:36:01 作者：

PHP如何獲取http請求頭信息,是一個(gè)急切解決而不知道如何抉擇的問題，本人搜集整理下，可供參考下

PHP手冊提供了現(xiàn)成的函數(shù)：
getallheaders
(PHP 4, PHP 5)
getallheaders — Fetch all HTTP request headers
說明
array getallheaders ( void )
Fetches all HTTP headers from the current request.
This function is an alias for apache_request_headers(). Please read theapache_request_headers() documentation for more information on how this function works.
返回值
An associative array of all the HTTP headers in the current request, orFALSE on failure.
Example #1 getallheaders() example

復(fù)制代碼代碼如下:

 
<?php 
foreach (getallheaders() as $name => $value) { 
echo "$name: $value\n"; 
} 
?> 

不過這個(gè)函數(shù)只能在apache環(huán)境下使用，iis或者nginx并不支持，可以通過自定義函數(shù)實(shí)現(xiàn)

復(fù)制代碼代碼如下:

 
<?php 
<SPAN class=html>if (!function_exists('getallheaders')) 
{ 
&nbsp;&nbsp;&nbsp; function getallheaders() 
&nbsp;&nbsp;&nbsp; { 
&nbsp;&nbsp; &nbsp; &nbsp; foreach ($_SERVER as $name => $value) 
&nbsp;&nbsp; &nbsp; &nbsp; { 
&nbsp;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if (substr($name, 0, 5) == 'HTTP_') 
&nbsp;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; { 
&nbsp;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; $headers[str_replace(' ', '-', ucwords(strtolower(str_replace('_', ' ', substr($name, 5)))))] = $value; 
&nbsp;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; } 
&nbsp;&nbsp; &nbsp; &nbsp; } 
&nbsp;&nbsp; &nbsp; &nbsp; return $headers; 
&nbsp;&nbsp;&nbsp; } 
}</SPAN> 
?> 

好了，看看都打印出了啥吧

復(fù)制代碼代碼如下:

 
<?php 
print_r(getallheaders()); 

獲得結(jié)果：

復(fù)制代碼代碼如下:

 
Array 
( 
[Accept] => */* 
[Accept-Language] => zh-cn 
[Accept-Encoding] => gzip, deflate 
[User-Agent] => Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; Trident/4.0; .NET CLR 2.0.50727) 
[Host] => localhost 
[Connection] => Keep-Alive 
) 

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