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Date: Fri, 29 Nov 2019 20:48:37 +0100
Cc: "internals@lists.php.net" <internals@lists.php.net>
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To: tyson andre <tysonandre775@hotmail.com>
Subject: Re: [PHP-DEV] Opt-in "use function *;" for skipping check for
 function/const in alternate namespace
From: claude.pache@gmail.com (Claude Pache)

>=20
> 2. Whether this should be part of =
declare(lookup_functions_in_current_namespace=3D1) or a "use" statement, =
if it does exist

Hi,

I don=E2=80=99t think it should be a declare() directive, because:

* It changes incompatibly the meaning of valid (non-error-throwing) =
code. The current existing declare() directive, declare(strict_types=3D*),=
 has the nice property that code that does not throw error in *both* =
modes does not change behaviour.

* When you want to know the FQN of a random identifier, it is necessary =
and sufficient to look at the =E2=80=9Cnamespace=E2=80=9D and the =
=E2=80=9Cuse=E2=80=9D declarations. With `use function *`, that won=E2=80=99=
t change. With `declare(lookup_functions_somewhere)`, you have now to =
look at an additional place.

=E2=80=94Claude