Newsgroups: php.internals
Path: news.php.net
Xref: news.php.net php.internals:105770
MIME-Version: 1.0
References: <aea6244a-258b-1a2e-a203-f67708a2448c@xs4all.nl>
 <CAFPFaMLibHOiL0U_b6aBqM3apCwKuvcGpbTEkRAFPg6qMPoXmA@mail.gmail.com> <c96c751e-ec07-1bc9-f288-41895684a12e@xs4all.nl>
In-Reply-To: <c96c751e-ec07-1bc9-f288-41895684a12e@xs4all.nl>
Date: Tue, 21 May 2019 10:29:17 +0200
Message-ID: <CAF+90c_9bH0p0CbbD6=RJJ0GkkkrMY7pf_er+E_Js-xNnDG_vQ@mail.gmail.com>
To: Dik Takken <d.takken@xs4all.nl>
Cc: "G. P. B." <george.banyard@gmail.com>, PHP Development <internals@lists.php.net>
Content-Type: multipart/alternative; boundary="00000000000006fe44058961a660"
Subject: Re: [PHP-DEV] Calling array_merge / array_merge_recursive without arguments
From: nikita.ppv@gmail.com (Nikita Popov)

--00000000000006fe44058961a660
Content-Type: text/plain; charset="UTF-8"

On Sat, May 18, 2019 at 9:37 PM Dik Takken <d.takken@xs4all.nl> wrote:

> On 17-05-19 22:52, G. P. B. wrote:
> >
> > So as a side note aren't there maybe some other array functions which
> > behave like this?
> >
>
> Good point. I did a quick scan of the source code and came up with a
> list of possible candidates for a similar treatment:
>
> array_map()
>

This one makes sense in theory, because array_map(null, ...$arrays) is a
way to perform a zip operation in PHP. Unfortunately there is an ugly
special case if there is only a single array, which makes this not actually
usable in practice, unless you know that there are at least two arrays. As
such, accepting zero arrays wouldn't be very useful unless we also want to
fix that issue (PHP 8 maybe?)


> array_diff() & friends

array_intersect() & friends


These look like good candidates for allowing a single arg.

Nikita

--00000000000006fe44058961a660--