How to get http header infomation using PHP?

Hi all,
Is there any way to get all the information in HTTP header? I want to
get a item called "Referring URL" in HTTP header. I find the information
is not contained in the environment global variable $_SERVER.

Thank you for suggestions!

Lian <lian@dsdfsdf.com> wrote:
> Is there any way to get all the information in HTTP header? I want to
> get a item called "Referring URL" in HTTP header. I find the information
> is not contained in the environment global variable $_SERVER.

print_r($_SERVER) prints all available headers and more. The referrer is
probably stored in 'HTTP-REFERER' IIRC.

BTW know that referrer is totally unreliable. Some clients or proxys
filter them, or anyone can easily forge them.

--

Daniel Tryba

Lian wrote:
> Is there any way to get all the information in HTTP header? I want to
> get a item called "Referring URL" in HTTP header. I find the information
> is not contained in the environment global variable $_SERVER.

Maybe the browser you're testing with is like mine and doesn't send that
information to the server.

For browsers that do send the 'REFERER' it appears in the $_SERVER
array.
If you can trust it or not is another completely different story.

> Thank you for suggestions!

Try to do whatever you're trying to do with $_SESSION variables.
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