Ehh, okay...

That cleared up the protected function for me, but my actual problem was the weird Class::selectorthing. Like, if your class extends another class, you can use $this-> to access anything, but should you use Class::? does Class:: do anything different from $this->?

And then theres the implements thing... I'll go read a tutorial for that...

And so you don't need to extend something to use a public function?

I read somewhere that you shouldn't edit or use the properties of a class in your script, is that true?

What do you do if you need to extend two classes?

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