Your thinking wrong, when wanting to write a page that will be deleted
you have to remember that php scripts make pages on the fly
so you have the KEY to the problem, you have to use a database
to store their IP in and place in there also some code or something
that lets you know that they have accessed the page your script
will create on the fly, and not do it again.
But like Sara said, WHY?????
Anyway I was wondering what your really trying to achive(?)
I write good cood and I have found no problem I can't in time
find a way to do. I may beable to help if you break your app
down into exact operation or workings, are you trying to make a
payPal thingy so they can't do something more then once?
Zcoder....