To me, it means features which would not be obvious to me in their function coming from a PHP/C/VB/Java background.

I typically write code which I can (and do) copy and paste into PHP almost without changes. (I use PHP as both webserver glue and for duplicating functionality so that I can have two copies of the same code to validate against each other.)

I've also started adding some Python to my project and developed a very similar style in Python, using commented curly braces to reduce the code's brittleness.