FrogWarrior

I'm not a professional programmer (I plan on becoming one though) so I'm only learning to design PHP applications. I've made a few applications and a problem I keep running into is that when they get big, they get really confusing and difficult to work with, so when I need to fix something or alter something I waste ages just trying to debug and figure out exactly what does what. I started using classes but they haven't made anything easier for me, so I'm guessing I don't know how to use them properly. Heres an example of a little script I made for personal use recently: http://pastebin.com/FC16LGta I omitted most of the code and just left the structure. This is my latest script, so its the best attempt I've made so far to make it easy to manage, but I've already run into trouble with it.