apache_response_headers()

(PHP 4 >= 4.3.0, PHP 5, PHP 7)

获得全部 HTTP 响应头信息

说明

获得全部 HTTP 响应头信息。

返回值

成功时返回包含全部 Apache 响应头信息的数组，或者在失败时返回FALSE.

更新日志

范例

apache_response_headers()示例

以上例程的输出类似于：

Array
(
    [Accept-Ranges] => bytes
    [X-Powered-By] => PHP/4.3.8
)

参见

• apache_request_headers()获取全部 HTTP 请求头信息
• headers_sent()检测 HTTP 头是否已经发送
• headers_list()返回已发送的 HTTP 响应头（或准备发送的）

I get "Call to undefined function apache_response_headers()" when using php-cli so be aware of lack of this function CLI.
In my case I was trying to test my app via phpunit (command line tool of course ;)) if it sends proper headers.

This function doesn't exist on lighttpd, so I wrote this little function to emulate it: 

If apache_response_headers() returns an empty array, try calling flush() before and it'll get filled.

I can confirm athlet's experience with apache_response_headers() using PHP 5.1.6. When the resulting array is empty or only contains "X-Powered-By" instead of the full list of values, you'll need to switch off output_buffering _before_ the script has been executed, for example with the following directive in .htaccess:
php_value "output_buffering" "0"
it _doesn't_ work when you do a you ini_set('output_buffering', 0); in your script. Not sure why that is so - it is not a bug in PHP, but probably has to do with how Apache populates the request values.

For apache_response_headers() working good, you need to set up output_buffering = Off in php.ini

Addendum: The code
gives me
 Array
 (
  [X-Powered-By] => PHP/5.1.6
 )
But the code
Results in
 Array
 (
  [Content-Location] => phpinfo.de.php
  [Vary] => negotiate
  [TCN] => choice
  [X-Powered-By] => PHP/5.1.6
  [Keep-Alive] => timeout=15, max=96
  [Connection] => Keep-Alive
  [Transfer-Encoding] => chunked
  [Content-Type] => text/html
  [Content-Language] => de
 )

call it after the you send the output to get all the headers

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