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Date: Mon, 20 May 2019 20:45:16 +0200
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To: Gabriel Ostrolucky <gadelat@gmail.com>
Cc: Theodore Brown <theodorejb@outlook.com>, PHP Internals List <internals@lists.php.net>
Content-Type: multipart/alternative; boundary="000000000000dd05590589562232"
Subject: Re: [PHP-DEV] High performance function autoloading
From: ocramius@gmail.com (Marco Pivetta)

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On Mon, 20 May 2019, 20:01 Gabriel O, <gadelat@gmail.com> wrote:

>
> On 20 May 2019 7:17:58 PM Theodore Brown <theodorejb@outlook.com> wrote:
>
> > Every time function autoloading been brought up in the past, there
> > have been concerns about performance issues when calling a global
> > function from inside a namespace. E.g. calling `strlen` in a loop
> > would become far slower if every call has to trigger the autoloader.
>
> This trick for perf improvement is overblown. It's misconception that it
> does provide speed advantage for most functions and reasons behind it. It
> does so only for those implemented as opcodes. People started to abuse it
> by importing ALL functions. Such overzealous approach completely prevents
> useful things like function mocking.
>

Disabling function mocking is good =C2=A9=EF=B8=8F

It was a terrible practice in first place, and it is usually done for
impure functions that should be wrapped in integration-tested adapters.

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