> On Aug 31, 2015, at 18:04, Bob Weinand <bobw...@hotmail.com> wrote: > > From the RFC: >> all variables used in the body of the anonymous function will automatically >> be bound to the anonymous function closure from the defining scope > > The implementation is not capturing all the variables from the outer scope, > but strictly only these accessed by the variables in the Closure itself. > Hence that shouldn't be much of an issue.
This magic scares me. I made a very deliberate decision In the very first implementation of PHP to avoid scope side-effects like this. Inside a function everything is local unless explicitly declared not to be. This has carried through for the past 20+ years in slightly different ways, but the basic rule has stayed consistent even for closures. Unless explicitly declared via a use clause, every variable inside a closure is local and no cross-scope variable name side-effects are possible. I am not convinced that this feature is worth breaking that longstanding basic tenet of the language. -Rasmus
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