Re: [PHP-DEV] [RFC] [Discussion] Serializable closures from constant expressions

Le 10/06/2026 à 19:02, Nicolas Grekas a écrit :
> Hi,
>
> I'd like to open the discussion on a new RFC:
> https://wiki.php.net/rfc/serializable_closures
>
> PHP 8.5 allowed closures in attribute arguments and parameter 
> defaults. These closures are static and capture nothing, yet they 
> cannot be serialized, which silently breaks every 
> serialize()-based metadata cache that meets them.
>
> The RFC proposes to make them serializable as references to their 
> declaration site.
>
> Feedback welcome.
>
> Cheers,
> Nicolas

Please forget my previous email, this was answered in the RFC:

 > Unserializing autoloads the class if needed and recreates the closure 
/as if its constant expression had just been evaluated/: same code, 
statically scoped to its declaring class (|self::|, private member 
access and |static::| behave identically),

Sorry for the noise!

Regards,

--

Pierre