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Date: Fri, 21 Feb 2025 12:09:46 -0800
Message-ID: <CALaXqqQdpEg-+FHMkkpvWaMmoqDuHhVri+mU7W=q1KuCQO80-w@mail.gmail.com>
Subject: [PHP-DEV] Constructor property promotion for final properties
To: internals@lists.php.net
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From: daniel.e.scherzer@gmail.com (Daniel Scherzer)

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Hi internals,

I recently found out that constructor property promotion cannot be used for
final properties. I propose that it become allowed. Thoughts? Would this
need an RFC, or is this minor enough to be acceptable with just a mailing
list discussion?

Background:
In the process of trying to help support PHP 8.4 syntax in PHPCS[1], I
discovered that constructor property promotion cannot be used with final
properties. I thought that this was a bug, and filed GH-17860 with the
report[2]. But, in the discussion on the patch that I sent to fix the
bug[3], I was told that this was intentionally omitted. So, now the bug is
a feature request.

-Daniel

[1] https://github.com/PHPCSStandards/PHP_CodeSniffer/issues/734
[2] https://github.com/php/php-src/issues/17860
[3] https://github.com/php/php-src/issues/17861

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<div dir=3D"ltr">Hi internals,<div><br></div><div>I recently found out that=
 constructor property promotion cannot be used for final properties. I prop=
ose that it become allowed. Thoughts? Would this need an RFC, or is this mi=
nor enough to be acceptable with just=C2=A0a mailing list discussion?<br><d=
iv><br></div><div>Background:</div><div>In the process of trying to help su=
pport PHP 8.4 syntax in PHPCS[1], I discovered that constructor property pr=
omotion cannot be used with final properties. I thought that this was a bug=
, and filed GH-17860 with the report[2]. But, in the discussion on the patc=
h that I sent to fix the bug[3], I was told that this was intentionally omi=
tted. So, now the bug is a feature request.</div><div><br></div><div>-Danie=
l</div><div><br></div><div>[1]=C2=A0<a href=3D"https://github.com/PHPCSStan=
dards/PHP_CodeSniffer/issues/734">https://github.com/PHPCSStandards/PHP_Cod=
eSniffer/issues/734</a></div><div>[2]=C2=A0<a href=3D"https://github.com/ph=
p/php-src/issues/17860">https://github.com/php/php-src/issues/17860</a></di=
v><div>[3]=C2=A0<a href=3D"https://github.com/php/php-src/issues/17861">htt=
ps://github.com/php/php-src/issues/17861</a></div></div></div>

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