[Kaklz]

Hey all. Is there a way to make a page that knows which page referred to it?
I'll illustrate: Page a and page b both link to page c. I want to set it up so that if one went to page c from page a, clicking a button like "continue" sends one to page d, whereas if one got to page c from page b, clicking "continue" would bring you to page e.
I really hope that that made sense.
Diagram:
Page A > Page C >click "continue" > Page D
Page B > Page C >click "continue" > Page E
Is this possible?

[cjgraphix]

php $_SERVER['HTTP_REFERER']; will tell you where it came from.

[Shiro]

to elaborate on that, you can use this code for your <a> tag:

<a <?php if ($_SERVER['HTTP_REFERER'] == "page_a") { echo "href=\"page_d\""; } elseif ($_SERVER['HTTP_REFERER'] == "page_b") { echo "href=\"page_e\""; } ?>>continue</a>

Just change around the page names.

[MikeMackay]

Just be advised though that this is not 100% reliable as some browsers (and even routers) can remove this header from the requesting user agent. This is also easy to spoof if needed.

Generally though, for non mission-critical applications this method should suffice.

Always good to be aware of what could go wrong.

- Mike

[Shiro]

The best way is to indicate the referring page is either through a $_POST method or a $_GET method. Cookies can be used as well, but if the user has cookies turned off/blocked on their machine, it wont work.

[Kaklz]

Originally Posted by haku

to elaborate on that, you can use this code for your <a> tag:

<a <?php if ($_SERVER['HTTP_REFERER'] == "page_a") { echo "href=\"page_d\""; } elseif ($_SERVER['HTTP_REFERER'] == "page_b") { echo "href=\"page_e\""; } ?>>continue</a>

Just change around the page names.

Thanks a lot.