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Date: Fri, 22 Jun 2018 06:42:47 -0600
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To: rtheunissen@php.net
Cc: Dan Ackroyd <danack@basereality.com>, internals <internals@lists.php.net>
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Subject: Re: [PHP-DEV] Equality and relative ordering of objects
From: morrison.levi@gmail.com (Levi Morrison)

On Fri, Jun 22, 2018 at 6:39 AM Levi Morrison <levim@php.net> wrote:
>
>
> > 1. You can't override the behaviour of `<`, `<=`, `>`, `>=`, `==`, `!=`
> > with a userland implementation.
> > 2. Therefore, you won't be able to affect the internals of array functions
> > like `in_array`, `sort` etc.
>
> In my opinion we should have functions which take comparator and/or equality functions as parameters even if we can override these operators. I'd like to see an outline of such a plan as part of this RFC or as a precursor to it.

(I know some already have this option, such as usort, but we don't
have an `in_array` that takes an equality callback, correct?)