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Date: Fri, 18 Sep 2015 09:05:11 +0200
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To: Rowan Collins <rowan.collins@gmail.com>
Cc: PHP internals <internals@lists.php.net>
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Subject: Re: [PHP-DEV] Let's discuss enums!
From: pajousek@gmail.com (=?UTF-8?Q?Pavel_Kou=C5=99il?=)

On Fri, Sep 18, 2015 at 1:06 AM, Rowan Collins <rowan.collins@gmail.com> wr=
ote:
> Hi All,
>
> This has come up in passing a few times recently, but I'm not sure there'=
s
> ever been a dedicated discussion of it: would it be useful for PHP to hav=
e a
> built-in Enumeration type, and if so, how should it look?
>
> Many other languages have enum types, with varying functionality. The
> central concept is always that there's some declared type with a bunch of
> named constants, but beyond that there's a lot of variability: for starte=
rs,
> is it a type of object, a special way of naming integers, or an uncompara=
ble
> type more like booleans and nulls?
>
>
> So, what are anyone's thoughts? Am I rambling on too much as usual? ;)
>
> Regards,
>
> --
> Rowan Collins
> [IMSoP]
>

Hi,

personally, I feel that you should be able to assign numeric value to
each element (and have them implicit if not specified).

This is imho better for serialization (but it can be done with names
as well, yeah) - but more importantly, it also allows usage with
bitwise operators, so you could use them as a "flags" (ie. $weekend =3D
Days::SATURDAY | Days::SUNDAY).

Regards
Pavel Kou=C5=99il