simple session/cookie question

[bitHacker]

hi,
I have created a new page for my project, which display a list of entries from a db.

so far so good :)

My problem, is that each entry has a lot of fields (about 20), so I separated them to 2 templates (1 for 15 questions and 1 for 5), what I want to do, is to disable/notify/make sure
if the user hit the back button in the browser, to not resubmit his step, and creating a duplicate entry.

For example, step 1 - answerd all the questions ok, hit my "next" button on the page,
answerd other questions on second page, then hit "finish" button, and all data is stored in DB.

NOW, hit back button and press "finish" AGAIN ! <--- how do I prevent it ??? :eek:

Thanks in advanced :up:

[Cpx]

make a query to count if the user already has submitted his answers.

like:

$query = "SELECT COUNT(*) FROM member_answers WHERE member_id='$member[id]' AND question='5' AND answered='1' "

and if the amount is > 0 , then it shows a warning that he already ansered that question if not, then it updates his answer