Extend library with own class

[eluser]Hyra[/eluser]
Hey hey,

can't find what I'm looking for in current threads, possibly because I'm not quite sure what to look for.

What i want to do: Extend a custom library with a custom class

On my site I will have several "Rewards" which will have a lot of the same functionality regarding loading and displaying.

So what i want to be able to write is a library like:

Code:

class CustomReward extends Reward {
// all custom functions
};

But the Reward class, sitting in the libraries folder, won't be loaded. I get a blank page if I try this.

Is it possible at all to do this?

(One alternative i haven't tried but might work is to "include" the file containing the mother-reward-class, and work with it like that, but this seems ugly.)