PHP擷取http請求的頭資訊實現步驟_php技巧

PHP手冊提供了現成的函數：
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.
傳回值
An associative array of all the HTTP headers in the current request, orFALSE on failure.
Example #1 getallheaders() example

複製代碼 代碼如下:

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

不過這個函數只能在apache環境下使用，iis或者nginx並不支援，可以通過自訂函數實現

複製代碼 代碼如下:

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

好了，看看都列印出了啥吧

複製代碼 代碼如下:

<?php
print_r(getallheaders());

獲得結果：

複製代碼 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
)