As being one of those function and global guys and have used classes from this site like your owm pop mail parser. I am starting to under stand the principle instead of just using them. I have along way to go but PhPclasses is great and many great programers.
The part I got a good laugh from was I think it went like this.
"This site is called PhPclasses because its about OOP classes not like PhP learning class like school!". LOL
But its a good way to get people into OOP as they will think this is PhP and the way it should be done!