How to include <fb:iframe>

Jun 2, 2008 at 10:52 AM
I am creating a facebook application in php using FBML.
It is a form the submission of which does some validations on the form input fields.
I want to place this form inside an fbml iframe so that i could use both fbml and iframe in my application.

I am new to PHP as well as facebook

Can somebody please help
Its very urgent

Thanks in advance