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Date: Wed, 25 Mar 2026 00:38:25 +1300
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Subject: Re: [PHP-DEV] [RFC] Four Pragmatic Directions for PHP: Simplicity,
 Arrays, Performance, Concurrency
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From: Weedpacket@varteg.nz (Morgan)

On 2026-03-24 23:08, 沉默领域、 wrote:
> 
> // Proposed
> $names = array_pluck($users, 'name');
> $names = array_where($users, fn($u) => $u->active);
> $first = array_first($users);
> $grouped = array_group_by($users, 'role');
> $compact = array_compact($data);
> 

Of those, array_compact() is obscure in its purpose, and of the others 
one exists under the suggested name and three of the others exist under 
different names.

array_group_by() is the only one that isn't already implemented. I think 
it means:

$roles = array_unique(array_column($users, 'role'));
$grouped = array_combine($roles, array_map(fn($r) => 
array_filter($users, fn($u) => $u['role']==$r), $roles));

though there are more efficient (and readable) ways of doing that.

--

Optimising the implementation would be more difficult if the language 
were allowed to be sloppier. Conversely, tightening up the language 
allows improved optimisation.