Get IFrame parent url or referrer using javascript or php

Posted by Pawel on Stack Overflow See other posts from Stack Overflow or by Pawel
Published on 2010-05-09T17:11:30Z Indexed on 2010/05/09 17:18 UTC
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iframe

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JavaScript

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php

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I am creating a widget that would load in a IFrame and users will be able to place the widget on their own website. How would I get the URL of the website that is using the IFrame in javascript and/or PHP? The IFrame loads a php file.

I have tried "parent.top.location.href" and "parent.document.referrer" in the IFrame page but that is undefined.

I have also tried to echo "$_Server[referrer]" in the IFrame page and that did return the IFrame parent URL, but how easy is it for someone to manipulate the referrer variable? I dont want to get misleading information.

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