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To: Rowan Tommins <rowan.collins@gmail.com>, "internals@lists.php.net"
	<internals@lists.php.net>
Thread-Topic: [PHP-DEV] Autoloading functions/consts without a performance
 impact
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Date: Fri, 3 Jan 2020 15:21:15 +0000
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Subject: Re: [PHP-DEV] Autoloading functions/consts without a performance
 impact
From: tysonandre775@hotmail.com (tyson andre)

> Now the behaviour of my program can completely change depending on which =
of=0A=
> those functions I call first, which might even depend on user input.=0A=
> Regardless of exactly how the cache works, that kind of unpredictability =
is=0A=
> a recipe for disaster.=0A=
=0A=
It already does completely change depending on user input, without autoload=
ing, in the same way.=0A=
I assume you're arguing against autoloading without autoloading \NS\strlen =
every time,=0A=
but I still consider the approach I'm proposing an improvement over existin=
g unpredictable behavior.=0A=
=0A=
> The only way to make it predictable again is to pre-define the namespaced=
=0A=
> function in my startup code, at which point I don't need function=0A=
> autoloading.=0A=
=0A=
Other use cases would benefit from function autoloading, though.=0A=
The use case in your example is very different from the common use case I=
=0A=
have in mind for proposing autoloading - name reuse should be uncommon in p=
ractice.=0A=
Adding "use NS\strlen", "namespace\strlen", etc. are alternatives to make i=
t predictable=0A=
I'd consider reusing the name from the global namespace intentionally to be=
 a code smell.=0A=
Overlap might be unavoidable for common names such as \NS\run() in some lib=
raries,=0A=
but hopefully they'd preload the entire file of functions for those,=0A=
or be in a different namespace from the code using those libraries,=0A=
and other libraries (e.g. polyfills in global namespace) could still use au=
toloading.=