Enums for Protobuf PHP?

[bshaffer]

PHP 8.1 brought us Enumerations, which are absolutely perfect for use in Protobuf. Specifically, backed Enumerations would bring us exactly what we want:

enum Status: int
{
    case STATUS_UNDEFINED = 0;
    case ACTIVE = 1;
    case INACTIVE = 2;
}

Now that this library supports a minimum of PHP 8.1, would the protobuf team entertain a change like this? We would want to put it behind an option, so as to prevent breaking changes.

[buchgr]

@haberman do you have any thoughts on this?

[haberman]

Brent, we'd love to take advantage of the new PHP feature. We'd have to stage the change to allow for a migration, possibly using editions: https://protobuf.dev/editions/overview/

If you could write a proposal for this, we could review it and review a PR to implement it.

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