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How cas i get the top URL from with a frame/iframe in PHP?

Posted on 2007-07-26
Medium Priority
Last Modified: 2013-12-13
Hi All,

How cas i get the top URL from with a frame/iframe in PHP?

I thought $_SERVER['HTTP_HOST']  would get it, but it returns the child frame, not the parent?

many thanks.
Question by:detox1978
  • 2
LVL 24

Expert Comment

ID: 19576500
I ran a quick test, and it looks like the data that is returned is frame-specific. For example, I generated a file on my local test server that first outputted various attributes, and then used an iframe to include a script on a remote server that echoed the same attributes. The results are below:

PHP_SELF: /test/iframe.php
SERVER_NAME: localhost
HTTP_HOST: localhost
SCRIPT_FILENAME: /home/glcummins/dev/test/iframe.php

(Contents of the iframe):

PHP_SELF: /frame.php
SERVER_NAME: www.remote-server.com
HTTP_HOST: www.remote-server.com
SCRIPT_FILENAME: /home/wwwhome/www.remote-server.com/frame.php

The test script I created looked like this:

Outside the frame<br />
echo "PHP_SELF: " . $_SERVER['PHP_SELF'] . "<br />";
echo "SERVER_ADDR: " . $_SERVER['SERVER_ADDR'] . "<br />";
echo "SERVER_NAME: " . $_SERVER['SERVER_NAME'] . "<br />";
echo "HTTP_HOST: " . $_SERVER['HTTP_HOST'] . "<br />";


<iframe width="80%" src="http://www.remote-server.com/frame.php">


'frame.php' on the remote server just contained the echo statements. Try this kind of setup on your servers, and see what result you get.
LVL 20

Expert Comment

ID: 19576644
php is a server site language and thus is not aware of parents of  frames , iframes popups etc.
You can get the url of the parent using jacascript.

<script language="javascript">

Author Comment

ID: 19577904
i guess the best route would be to grab the URL using JavaScript and redirect the page to another page to collect it.

Any idea how i could do this, i'm not that good with JavaScript
LVL 20

Accepted Solution

steelseth12 earned 2000 total points
ID: 19594525
Actually the best way to do it is not have the child frame getting the location of the parent, but rather having the parent frame storing its location.
This can be done using sessions. Eg

#### frame1.php  ########
<? session_start();
$_SESSION["path"] = $_SERVER['PHP_SELF'];
<iframe src="frame2.php"></iframe>

##### frame2.php ##########
<? session_start();
print $_SESSION["path"];

If for any reason you cant use sessions or prefer the javascript method tell me and ill give you an example.


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