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Date: Tue, 04 Nov 2025 14:59:38 +0100
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Subject: Re: [PHP-DEV] [RFC][Discussion] use construct (Block Scoping)
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From: rob@bottled.codes ("Rob Landers")

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On Mon, Nov 3, 2025, at 22:46, Seifeddine Gmati wrote:
> Hello internals,
>=20
> Tim and I would like to open the discussion on our new RFC that we've =
been working on: "use construct (Block Scoping)".
>=20
> We wanted to raise a few initial points:
>=20
>  =E2=80=A2 The RFC proposes the ``use`` keyword. What are your thought=
s on a new ``using`` keyword instead, similar to C# or Hack?
>=20
>  =E2=80=A2 How do you feel about the questions raised in the "Open Iss=
ues" section?
>=20
>  =E2=80=A2 What are your general thoughts on the RFC?
>=20
> Please find the following resources for your reference:
>=20
>  =E2=80=A2 RFC: https://wiki.php.net/rfc/optin_block_scoping
>=20
>  =E2=80=A2 POC: https://github.com/php/php-src/compare/master...TimWol=
la:php-src:block-scope
>=20
> Thanks,
>=20
> Seifeddine Gmati.
>=20

Hello,

One thing that isn't clear with this RFC is what happens to things redef=
ined in the scope?

$a =3D 10;

use ($a =3D 5) {
  var_dump($a);
}

var_dump($a); // unset or 10?

=E2=80=94 Rob
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<!DOCTYPE html><html><head><title></title></head><body><div>On Mon, Nov =
3, 2025, at 22:46, Seifeddine Gmati wrote:</div><blockquote type=3D"cite=
" id=3D"qt" style=3D""><div dir=3D"ltr"><div dir=3D"ltr"><p><span class=3D=
"font" style=3D"font-family:arial, sans-serif;">Hello internals,</span><=
/p><p><span class=3D"font" style=3D"font-family:arial, sans-serif;">Tim =
and I would like to open the discussion on our new RFC that we've been w=
orking on: "use construct (Block Scoping)".</span></p><p><span class=3D"=
font" style=3D"font-family:arial, sans-serif;">We wanted to raise a few =
initial points:</span></p><ul><li><p><span class=3D"font" style=3D"font-=
family:arial, sans-serif;">The RFC proposes the&nbsp;<code>`use</code>` =
keyword. What are your thoughts on a new `<code>using</code>` keyword in=
stead, similar to C# or Hack?</span></p></li><li><p><span class=3D"font"=
 style=3D"font-family:arial, sans-serif;">How do you feel about the ques=
tions raised in the "Open Issues" section?</span></p></li><li><p><span c=
lass=3D"font" style=3D"font-family:arial, sans-serif;">What are your gen=
eral thoughts on the RFC?</span></p></li></ul><p><span class=3D"font" st=
yle=3D"font-family:arial, sans-serif;">Please find the following resourc=
es for your reference:</span></p><ul><li><p><span class=3D"font" style=3D=
"font-family:arial, sans-serif;">RFC: <a href=3D"https://wiki.php.net/rf=
c/optin_block_scoping" target=3D"_blank">https://wiki.php.net/rfc/optin_=
block_scoping</a></span></p></li><li><p><span class=3D"font" style=3D"fo=
nt-family:arial, sans-serif;">POC: <a href=3D"https://github.com/php/php=
-src/compare/master...TimWolla:php-src:block-scope" target=3D"_blank">ht=
tps://github.com/php/php-src/compare/master...TimWolla:php-src:block-sco=
pe</a></span></p></li></ul><p><span class=3D"font" style=3D"font-family:=
arial, sans-serif;">Thanks,</span></p><p><span class=3D"font" style=3D"f=
ont-family:arial, sans-serif;">Seifeddine Gmati.</span></p></div></div><=
/blockquote><div><br></div><div>Hello,</div><div><br></div><div>One thin=
g that isn't clear with this RFC is what happens to things redefined in =
the scope?</div><div><br></div><div>$a =3D 10;</div><div><br></div><div>=
use ($a =3D 5) {</div><div>&nbsp; var_dump($a);</div><div>}</div><div><b=
r></div><div>var_dump($a); // unset or 10?</div><div><br></div><div id=3D=
"sig121229152">=E2=80=94 Rob</div></body></html>
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