Re: [RFC] Auto-capture multi-line closures andshortfunctions take 2

2021-03-25 15:23 GMT+01:00, Christian Schneider <cschneid@cschneid.com>: > Am 25.03.2021 um 14:29 schrieb Mark Randall <marandall@php.net>: >> On 25/03/2021 09:28, Rowan Tommins wrote: >>> That's not quite what I meant. I meant that you can't say "capture by >>> default, but this variable is definitely local". >> >> I think if there's one argument against, this would be it, but IMHO it is >> a weakness in PHP as a whole. > > I'm not sure if I misunderstand what you're saying but to me it is one of > the greatest things about PHP that everything is local by default (minus a > narrow set of well-known and easily enough recognizable things). > >> The solution would be adding JS-like let / const statements. Which would >> be a benefit to other things too. > > > I disagree that this is the solution. I think JS had to add var and later > let because of the unfortunate decision to have C-like scoping rules. > Making scoping in PHP more complex to be able to repeat this mistake in some > form seems ill-advised to me. > > - Chris You could make the change that *all* variables are now block-scoped, not function-scoped. That would make auto-capture less dangerous, but I don't know how much code it would break.