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Subject: Re: [PHP-DEV] [Concept] Flip relative function lookup order (global,
 then local)
Date: Fri, 2 Aug 2024 21:01:47 +0200
In-Reply-To: <CAPyj-LCoBY2bPHLmsyONYDbY9aRSraLz5QNskeTiWfpMD0pTSg@mail.gmail.com>
Cc: PHP internals <internals@lists.php.net>
To: Ilija Tovilo <tovilo.ilija@gmail.com>
References: <CAPyj-LCoBY2bPHLmsyONYDbY9aRSraLz5QNskeTiWfpMD0pTSg@mail.gmail.com>
From: claude.pache@gmail.com (Claude Pache)


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Hi,

I propose the following alternative approach:

* establish a restricted whitelist of global functions for which the =
performance gain would be noteworthy if there wasn=E2=80=99t any need to =
look at local scope first;

* for those functions, disallow to define a function of same name in any =
namespace, e.g.: https://3v4l.org/RKnZt

That way, those functions could be optimised, but the current semantics =
of namespace lookup would remain unchanged.

=E2=80=94Claude



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<html><head><meta http-equiv=3D"content-type" content=3D"text/html; =
charset=3Dutf-8"></head><body style=3D"overflow-wrap: break-word; =
-webkit-nbsp-mode: space; line-break: =
after-white-space;">Hi,<div><br></div><div>I propose the following =
alternative approach:</div><div><br></div><div>* establish a restricted =
whitelist of global functions for which the performance gain would be =
noteworthy if there wasn=E2=80=99t any need to look at local scope =
first;</div><div><br></div><div>* for those functions, disallow to =
define a function of same name in any namespace, e.g.:&nbsp;<a =
href=3D"https://3v4l.org/RKnZt">https://3v4l.org/RKnZt</a><br><div><br></d=
iv><div>That way, those functions could be optimised, but the current =
semantics of namespace lookup would remain =
unchanged.</div><div><br></div><div>=E2=80=94Claude</div><div><br></div><d=
iv><br></div></div></body></html>=

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