The destructor trick is really impressive, nice work! But sho...

The destructor trick is really impressive, nice work! But shouldn't it be possible without flooding the global namespace? Like storing the references in a static array?

Yes, you're correct, this flooding can be easily fixed. This "global" behaviour is the code because of the old times: when I wrote the class back in 2008 i've done this quick dirty trick just to test if it's even possible to do the autoboxing (and I've forgot to fix that later).

Please also note, that this class is rather a PoC (Proof of Concept) rather than a full scale bussiness ready solution. I did wrote about this in my class description, but it has been changed by the site administrator.

I've stripped this mechanism from my framework which heavily uses this solution for and datatype security enforcement and UTF-8 Strings (see my "Java compatible UTF-8 string class" on phpclasses - which is also stripped from this mechanism but can be easily reimplemented)

Ok, i've fixed this problem. Now everything is in VariablesManager class.