Multiple forms in 1 php document

Hi I have been making a mod for my site do quickly add new info by using a simple admincp i created, I want to be able to choose the page I want to edit and edit it in the 1 page.. ie(edit "game.php" in "edit.php" and "index.php" in "edit.php").
The problem I am having atm is when i go to change the page I want to edit it calls the id of the page but in that page is another processor that submits the info from that page and the result ends up being that the database is wyped becuse all the fields get submited empty. I want to proces multiple forms in the 1 script any pointers?