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Date: Mon, 7 Jul 2025 21:49:19 +0200
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Subject: Re: [PHP-DEV] [RFC] Deprecations for PHP 8.5
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From: dossche.niels@gmail.com (Niels Dossche)

On 07/07/2025 21:19, Theodore Brown wrote:
> On Mon, July 7, 2025 at 11:03 Niels Dossche wrote:
>> You're allowed to do $array[null], $array[3.14], etc... and the key will coerce.
>> I expect array_key_exists() to behave the same way as keys on array accesses do.
> 
> I'm confused what you mean as well. The deprecation is for both array offsets and when calling array_key_exists().
> So $array[null] should output a deprecation just like the function, and there isn't any inconsistency.

Okay now I understand. I misread the description and missed the word "and".

However, I still need some clarifications:

From the RFC:
> Notably an offset of null is type juggled to the empty string "" rather than 0, contrasting with how values of type bool, float, and resources are cast to int.

Why is this wrong? Why must it get cast to 0?

From the RFC:
> Which is even more surprising that the other operators that accept both string and int are bitwise operators and they throw a type error when attempting to use null with a value of type string.

I tried understanding this sentence multiple times but I just don't understand what it's saying.
Even presuming that the first "that" should maybe be "than", I still don't understand it.

Kind regards
Niels