Newsgroups: php.internals
Path: news.php.net
Xref: news.php.net php.internals:129982
Precedence: list
MIME-Version: 1.0
References: <CAOWwgp=JtbTSVCv9z=QGx9yS=8G72L-hcAjcOj33eEMLB0zfvg@mail.gmail.com>
 <CADyq6sJMXmDixLPO91P5d+5V28zhu0TVVfLxBKSUfF41JtYjkw@mail.gmail.com>
In-Reply-To: <CADyq6sJMXmDixLPO91P5d+5V28zhu0TVVfLxBKSUfF41JtYjkw@mail.gmail.com>
Date: Mon, 2 Feb 2026 22:14:03 +0100
Message-ID: <CAOWwgpnToAqGN=_bj9JB8gj-2PO9gqq2SgFYYg6LmPTSmCyQ=Q@mail.gmail.com>
Subject: Re: [PHP-DEV] [RFC] Allow Reassignment of Promoted Readonly
 Properties in Constructor
To: Marco Pivetta <ocramius@gmail.com>
Cc: PHP Internals List <internals@lists.php.net>
Content-Type: multipart/alternative; boundary="0000000000001960b20649ddceca"
From: nicolas.grekas+php@gmail.com (Nicolas Grekas)

--0000000000001960b20649ddceca
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable

Hi Marco,

Le lun. 2 f=C3=A9vr. 2026 =C3=A0 11:54, Marco Pivetta <ocramius@gmail.com> =
a =C3=A9crit :

> Hey Nicolas,
>
>
> On Thu, 22 Jan 2026 at 16:34, Nicolas Grekas <nicolas.grekas+php@gmail.co=
m>
> wrote:
>
>> Dear all,
>>
>> Here is a new RFC for you to consider:
>> https://wiki.php.net/rfc/promoted_readonly_constructor_reassign
>>
>
>
> What happens if one calls `$obj->__construct(1, 2, 3)` (on an already
> instantiated `$obj`) in the context of this patch?
>

Thanks for asking, I didn't think about this. This made me also think about
ReflectionClass::newInstanceWithoutConstructor().
I clarified this in the RFC, see "Direct __construct() Calls Cannot Bypass
Readonly" and "Reflection: Objects Created Without Constructor".
Patch and PR updated also if anyone wants to run some code where this RFC
can be played with.

Cheers,
Nicolas

--0000000000001960b20649ddceca
Content-Type: text/html; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable

<div dir=3D"ltr"><div dir=3D"ltr">Hi Marco,</div><br><div class=3D"gmail_qu=
ote gmail_quote_container"><div dir=3D"ltr" class=3D"gmail_attr">Le=C2=A0lu=
n. 2 f=C3=A9vr. 2026 =C3=A0=C2=A011:54, Marco Pivetta &lt;<a href=3D"mailto=
:ocramius@gmail.com">ocramius@gmail.com</a>&gt; a =C3=A9crit=C2=A0:<br></di=
v><blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;borde=
r-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir=3D"ltr"><div d=
ir=3D"ltr"><div>Hey Nicolas,</div><br></div><br><div class=3D"gmail_quote">=
<div dir=3D"ltr" class=3D"gmail_attr">On Thu, 22 Jan 2026 at 16:34, Nicolas=
 Grekas &lt;<a href=3D"mailto:nicolas.grekas%2Bphp@gmail.com" target=3D"_bl=
ank">nicolas.grekas+php@gmail.com</a>&gt; wrote:<br></div><blockquote class=
=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rg=
b(204,204,204);padding-left:1ex"><div dir=3D"ltr"><div>Dear all,</div><div>=
<br></div><div>Here is a=C2=A0new RFC for you to consider:</div><div><a hre=
f=3D"https://wiki.php.net/rfc/promoted_readonly_constructor_reassign" targe=
t=3D"_blank">https://wiki.php.net/rfc/promoted_readonly_constructor_reassig=
n</a></div></div></blockquote><div><br></div><div><div><br></div><div>What =
happens if one calls `$obj-&gt;__construct(1, 2, 3)` (on an already instant=
iated `$obj`) in the context of this patch?</div></div></div></div></blockq=
uote><div><br></div><div>Thanks for asking, I didn&#39;t think about this. =
This made me also think about ReflectionClass::newInstanceWithoutConstructo=
r().</div><div>I clarified this in the RFC, see &quot;Direct __construct() =
Calls Cannot Bypass Readonly&quot; and &quot;Reflection: Objects Created Wi=
thout Constructor&quot;.</div><div>Patch and PR updated also if anyone want=
s to run some code where this RFC can be played with.</div><div><br></div><=
div>Cheers,</div><div>Nicolas</div><br></div></div>

--0000000000001960b20649ddceca--