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Date: Fri, 22 Jun 2018 16:14:31 +0100
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To: Rudi Theunissen <rtheunissen@php.net>
Cc: PHP internals <internals@lists.php.net>
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Subject: Re: [PHP-DEV] Equality and relative ordering of objects
From: danack@basereality.com (Dan Ackroyd)

On 22 June 2018 at 12:31, Rudi Theunissen <rtheunissen@php.net> wrote:

>
>> I think if you want to push the RFC forward, a really quite strong
>> case needs to be made for why having it be a language level feature is
>> so much better (or even at all better) than having it be implemented
>> in userland.

>
>
> 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.


Yes, that's the type of thing that I think needs to be included as
part of the RFC.

Including a list of all the (or at least the important) functions that
would be affected by this RFC should be made both for clarity and so
that people can think through any edge cases.

cheers
Dan