I'll check that out. I've gotten in the habit of using variable caching for methods I might repeatably call (ie, db method to return the db object) and use did basic isset() checks; setting the value if false and returning the variable.

That can be useful for methods were I have a rather large return array and want to free up some memory instead of keeping the values stored in a local variable (pretty much what I'm needing and more). Thanks!

And the module part, generally this is true although some stronger modules (especially ones that start playing around with memory and system level stuff) requires compiled code. So I just wanted to make sure I cleared that restriction before I get a slew of mem_cache type modules suggested