> That, and also the fact that it may be pretty much the only dynamic language in use today with ARC and not a GC. Python and Perl use reference counting too.

> That, and also the fact that it may be pretty much the only dynamic language in use today with ARC and not a GC. Python and Perl use reference counting too. Ruby, Lua and JS (at least v8) are GC'd. PHP isn't unique in that regard.