Multi-Step Script

Is it possible to use different parts of one php script for multiple html forms? I am not seeing how people create multiple pages of html forms with each form importing information from the previous form. Right now, for each html form page I have, I create one php script to handle it but it would be nice to have just one php script in which only certain parts execute depending on have variables have assignments. One way I was thinking of doing this is to have the html forms just keep posting the information to itself whenever the submit button is hit and then using a series of if else statements to evaluate where the program is in relationship to the forms, would this type of system work? What do you guys do? -Andrew V. Romero To reply personally, remove all numbers from address.