Help with sessions???

[ranxerox]

I'm trying to build a persistence mechanism of sorts. Its supposed to work like this... The user selects an application ID from which a query is built and spits out about 40 fields worth of data. (I've got that part). The user can then edit that data and submits it back to the database. As I've discovered (!), I need a) a way of "holding" the initial data between forms b) a comparison routine to check the original data with the newly submitted form fields and submitting those changed fields to the database. I'd really appreciate any links or resource pointers to help me out here as I'm pretty new to PHP.... FWIW, all transactions take place under a secure environment, so if this permits a different approach, I'd appreciate hearing any suggestions there too...
Thanks in advance

[knickerlas]

Hi,
There are good session tutorials here and on www.devshed.com.
They're dead easy once you get the hang of it.

Nick

[[deleted]]

So it's not really a session problem is it? :-)

If you are going to update changes, why bother with the check? I mean, just update all fields, wether they changed or not. I won't be a big load on your db, and saves you a lot of trouble.

Otherwise you could do it in sessions. You could also (if it's not too much data) store the "old" version of the data in hidden fields inside the form itself.
That way the client would be submitting both the new and the original data, for easy comparison.