> Le 2 nov. 2022 à 19:54, Juliette Reinders Folmer
> <php-internals_nos...@adviesenzo.nl> a écrit :
>
> On 2-11-2022 18:46, Benjamin Morel wrote:
>> Hi internals,
>>
>> It just came to my attention that there is a change of behaviour between
>> PHP 8.1 and 8.2 in the way iterable is decomposed, or not, into
>> Traversable|array when reflected:
>>
>> ```
>> function foo(): iterable {}
>> function bar(): stdClass|iterable {}
>>
>> echo (new ReflectionFunction('foo'))->getReturnType(), PHP_EOL;
>> echo (new ReflectionFunction('bar'))->getReturnType(), PHP_EOL;
>> ```
>>
>> Output on PHP 8.1:
>>
>> ```
>> iterable
>> stdClass|iterable
>> ```
>>
>> Output on PHP 8.2:
>>
>> ```
>> iterable
>> stdClass|Traversable|array
>> ```
>>
>> Is this expected behaviour? Or should I file a bug? I'm particularly
>> surprised that it behaves this way on PHP 8.2 only in the presence of union
>> types.
>>
>> Thank you,
>> Benjamin
>>
> That's a intentional behaviour change and related to this accepted PHP 8.2
> RFC: https://wiki.php.net/rfc/iterator_xyz_accept_array
>
> Smile,
> Juliette
It is rather related the following RFC:
https://wiki.php.net/rfc/dnf_types
The change was discussed in this thread:
https://externals.io/message/117577
—Claude
