Re: Calling array_merge / array_merge_recursive without arguments

On 21.05.2019 at 12:54, G. P. B. wrote: > On Tue, 21 May 2019 at 10:29, Nikita Popov <nikita.ppv@gmail.com> wrote: > >> On Sat, May 18, 2019 at 9:37 PM Dik Takken <d.takken@xs4all.nl> wrote: >> >>> 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?) > > I'm not sure I totally understand the edge case, moreover this isn't > currently documented. > Mind sharing an example or explaining a bit more in detail such that I can > update the documentation? If you pass only a single array to array_map(NULL, …), you don't get an array of arrays, but a single flat array, see <https://3v4l.org/sqtqS>. -- Christoph M. Becker