Thread: Sessions and files

that's right, a temp folder or a temp db table that would store that data will do the job.
In the case of a temp folder I would create a subdirectory for the session (that is, directory name = session id) and create script that would be fired up at the end of the session. The end of the session would mean: 1. The user has submitted the form, action: move the valid data to the designated location and delete the temp subdirectory; 2. the user left without completing the form properly or in a timely manner (= session timeout), delete the temp subdirectory.
As to a db table, it depends on you app design whether or not this would be more sensible.
You may also want to take a look at these answers:

PHP - Store Images in SESSION data ??? - Stack Overflow
I would also advise against storing images in the session variable.

excellent, thanks a lot for quick response, really appreciate it.. I think I will just store them in a sub directory as I don't store any other images in my db.
I've been reading around quite a bit about sessions, haven't really done any real web development before, I am a student and more familiar with standard C, C++..
When assigning a session using $formSession = new Zend_Session_Namespace('registerForm'); this automatically creates a session and sets a unique session id, right? And why use the namespace, is it so you can have different setting for different types of sessions? and finally do you access the underlying php sessions by $formSession->__get('id'); ??