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 <CADyq6sK8-FqvoPtqQzQO0o9GYj_u8gXnRwTeTu+oZwwVnkd4rA@mail.gmail.com> <6C2A8D96-BB4C-4091-85D8-21654C242364@gmail.com>
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Date: Tue, 30 Dec 2025 19:41:24 +0100
Message-ID: <CADyq6sLrbzb19cRBA-rSrXb-LQ8o0u=tsRLuEyoh4nQjzT14uA@mail.gmail.com>
Subject: Re: [PHP-DEV] [Discussion] Reflection-based constructor autowiring
 (scope clarification)
To: =?UTF-8?B?QU5EUsOBUyBab2x0w6FuIEd5w6FyZsOhcw==?= <azolee@gmail.com>
Cc: "internals@lists.php.net" <internals@lists.php.net>
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From: ocramius@gmail.com (Marco Pivetta)

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Hey Zoli,

On Tue, 30 Dec 2025 at 08:17, ANDR=C3=81S Zolt=C3=A1n Gy=C3=A1rf=C3=A1s <az=
olee@gmail.com>
wrote:

> If you have any guidance on what you would consider a representative
> benchmark or a meaningful performance threshold for =E2=80=9Cworth moving=
 into
> core=E2=80=9D, I=E2=80=99d appreciate it.
>

In the grand majority of cases where autowiring is meaningful (at least for
PHP), you care about a "cold start" of the application (although that's
changing with ReactPHP/FrankenPHP/Roadrunner/etc.).

You may design a PHPBench or Hyperfine test that:

* starts a PHP process, autowires something, shuts down. Hyperfine helps a
lot here.
* repeats the above, but within a warm process (classes already loaded,
tight loop repeating the operation). PHPBench is a bit more precise here.

You probably care about these cases:

* zero-arguments constructor
* simple concrete class references
* default constructor arguments
* resolvers
* autowiring of a complex multi-level structure

In all the above cases, you probably care about the usage with autowiring
API vs the usage via direct instantiation, so you can see the exact
overhead.

Marco Pivetta

https://mastodon.social/@ocramius

https://ocramius.github.io/

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<div dir=3D"ltr"><div dir=3D"ltr"><div>Hey Zoli,</div></div><br><div class=
=3D"gmail_quote gmail_quote_container"><div dir=3D"ltr" class=3D"gmail_attr=
">On Tue, 30 Dec 2025 at 08:17, ANDR=C3=81S Zolt=C3=A1n Gy=C3=A1rf=C3=A1s &=
lt;<a href=3D"mailto:azolee@gmail.com">azolee@gmail.com</a>&gt; wrote:<br><=
/div><blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;bo=
rder-left:1px solid rgb(204,204,204);padding-left:1ex"><div><p>If you have =
any guidance on what you would consider a representative benchmark or a mea=
ningful performance threshold for =E2=80=9Cworth moving into core=E2=80=9D,=
 I=E2=80=99d appreciate it.</p></div></blockquote><div><br></div><div>In th=
e grand majority of cases where autowiring is meaningful (at least for PHP)=
, you care about a &quot;cold start&quot; of the application (although that=
&#39;s changing with ReactPHP/FrankenPHP/Roadrunner/etc.).</div><div><br></=
div><div>You may design a PHPBench or Hyperfine test that:</div><div><br></=
div><div>* starts a PHP process, autowires something, shuts down. Hyperfine=
 helps a lot here.</div><div>* repeats the above, but within a warm process=
 (classes already loaded, tight loop repeating the operation). PHPBench is =
a bit more precise here.</div><div><br></div><div>You probably care about t=
hese cases:</div><div><br></div><div>* zero-arguments constructor</div><div=
>* simple concrete class references</div><div>* default constructor argumen=
ts</div><div>* resolvers</div><div>* autowiring of a complex multi-level st=
ructure</div><div><br></div><div>In all the above cases, you probably care =
about the usage with autowiring API vs the usage via direct instantiation, =
so you can see the exact overhead.</div><div><br></div><div><div></div><div=
><div dir=3D"ltr" class=3D"gmail_signature"><div dir=3D"ltr">Marco Pivetta =
<br><br><a href=3D"https://mastodon.social/@ocramius" target=3D"_blank">htt=
ps://mastodon.social/@ocramius</a><br><br><a href=3D"https://ocramius.githu=
b.io/" target=3D"_blank">https://ocramius.github.io/</a></div></div></div>=
=C2=A0</div></div></div>

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