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To: Gabriel O <gadelat@gmail.com>, PHP internals <internals@lists.php.net>
Thread-Topic: [PHP-DEV] High performance function autoloading
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Date: Mon, 20 May 2019 18:42:55 +0000
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Subject: Re: [PHP-DEV] High performance function autoloading
From: theodorejb@outlook.com (Theodore Brown)

On Mon, May 20, 2019 at 1:00 PM Gabriel O <gadelat@gmail.com> wrote:=0A=
=0A=
> > Every time function autoloading been brought up in the past, there=0A=
> > have been concerns about performance issues when calling a global=0A=
> > function from inside a namespace. E.g. calling `strlen` in a loop=0A=
> > would become far slower if every call has to trigger the autoloader.=0A=
> =0A=
> This trick for perf improvement is overblown. It's misconception that it=
=0A=
> does provide speed advantage for most functions and reasons behind it. It=
=0A=
> does so only for those implemented as opcodes. People started to abuse it=
=0A=
> by importing ALL functions. Such overzealous approach completely prevents=
=0A=
> useful things like function mocking.=0A=
=0A=
Can you clarify? I'm not sure what performance improvement trick you=0A=
are referring to, or what you mean by "importing all functions". Are=0A=
you saying it's a misconception that triggering an autoloader on=0A=
unqualified function calls in a namespace will slow down performance?=0A=
As I understand it, this is the roadblock for function autoloading.=0A=
=0A=
Best regards,=0A=
Theodore=