Thanks Zero
My plan is to change it so that it displays the form and processes the code in one file, and to add error checking as I learn more. I'm going to go change it so it uses CSS instead of HTML to do some things.
My fun with this is, it would be easier to make the application in JavaScript though so it's more of a challenge with PHP.
It works pretty well, took me a few hours but it's pretty good. I do have some books so I'll read parts of those and apply it to this application.