Re: [RFC] Deprecations for PHP 8.5

On Mon, July 7, 2025 at 11:03 Niels Dossche wrote: >>> There are a few things I will vote no for: >>> >>> [...] >>> >>> * Deprecate using values of type null and bool as array offsets and when calling >>> array_key_exists() >>> Deprecating this would make the language more inconsistent by allowing this on array >>> offsets but not on the function. >> >> I am slightly confused by what you mean by "allowing this on array offsets but not on >> the function". >> However, null is not accepted by functions that accept scalar types, and bool would neither >> if my other RFC is approved. >> Moreover, a type declaration of int|string accepted Stringable objects, however array >> offsets do not accept objects at all. > > I'll clarify: > 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. Regards, Theodore Brown