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In-Reply-To: <0a0c8c09-f863-96fd-866c-7dcc2b691904@fischer.name>
Date: Mon, 20 Apr 2020 18:53:00 +0200
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To: Markus Fischer <markus@fischer.name>
Cc: PHP Internals List <internals@lists.php.net>
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Subject: Re: [PHP-DEV] [RFC] Mixed type
From: kocsismate90@gmail.com (=?UTF-8?B?TcOhdMOpIEtvY3Npcw==?=)

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>
> But how would this work for serializing resources, which is part of mixed=
?
>

https://3v4l.org/n9D2S

The point is that many internal functions accept all types (including
resources),
even though they might not do much useful with some of them.

Besides the functions that Benjamin mentioned, I'd add the *printf family
that accept "mixed" parameters to the list.

Seems to me exactly this case would benefit from a, albeit long though
> more accurate, actual union type.


Regarding accuracy, I believe the more types you have in an union type, the
less
important exact accuracy is, at least for return types and properties. For
example
if a function has a return type of mixed, I don't consider it a big deal if
the implementation
doesn't actually return 1 type (e.g. resource, null) in practice.

M=C3=A1t=C3=A9

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