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Date: Sat, 13 May 2023 18:14:39 +0200
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To: Niels Dossche <dossche.niels@gmail.com>
Cc: internals <internals@lists.php.net>
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Subject: Re: [PHP-DEV] [RFC] [Discussion] nameof
From: landers.robert@gmail.com (Robert Landers)

On Sat, May 13, 2023 at 5:18=E2=80=AFPM Niels Dossche <dossche.niels@gmail.=
com> wrote:
>
> On 13/05/2023 09:27, Robert Landers wrote:
> > Hello Internals,
> >
> > It is with much trepidation and excitement that I'd like to announce
> > the `nameof` RFC (https://wiki.php.net/rfc/nameof). It has changed
> > quite a bit in the last couple of days, so if you haven't seen the
> > latest draft, please check it out.
> >
> > Essentially, it allows using `nameof()` anywhere a string can be used,
> > even in static contexts. From a developer's perspective, it is a
> > string and from the engine's perspective, it is also mostly a string
> > (depending on how deep we want to go on error checking -- see the
> > RFC).
> >
> > If anything is unclear or if I missed something, please let me know.
> >
> > Robert Landers
> > Software Engineer
> > Utrecht NL
> >
>
> Hello Robert
>
> Thank you for doing the proposal. I can see some places where I might use=
 this.
>
> I have an additional question that I don't think has been asked yet. Abou=
t the interaction of nameof with "variable variables":
> What should be returned by `nameof($$variable)`, and similarly `nameof($$=
$variable)`, etc?
> Defining the semantics for this, and giving examples in the RFC text woul=
d be great :)
>
> Good luck with your RFC.
>
> Cheers
> Niels

That is a good question.

It should be a compile error due to ambiguity. I'll update the RFC to
include that.

$variable would already be the name of the variable being referenced
by $$variable, so if you want the name of $variable, just get the name
of $variable, and if you want the name of $$variable, just get the
value of $variable.