Newsgroups: php.internals
Path: news.php.net
Xref: news.php.net php.internals:106641
MIME-Version: 1.0
References: <CAG9XoMQsgkGDBt2vNYnMePykURWSwfFtYqHo4qrV8TzZnZ6HiQ@mail.gmail.com>
In-Reply-To: <CAG9XoMQsgkGDBt2vNYnMePykURWSwfFtYqHo4qrV8TzZnZ6HiQ@mail.gmail.com>
Date: Sun, 18 Aug 2019 12:14:52 +0200
Message-ID: <CAOWwgpkwA-6XQ3bO3-XwBOMiPMeK1VP1ZeA-0gzfYozt9QwSpw@mail.gmail.com>
To: Benjamin Morel <benjamin.morel@gmail.com>
Cc: PHP Internals List <internals@lists.php.net>
Content-Type: multipart/alternative; boundary="000000000000259d980590618094"
Subject: Re: [PHP-DEV] get_class_vars() and typed properties
From: nicolas.grekas@gmail.com (Nicolas Grekas)

--000000000000259d980590618094
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable

Le dim. 18 ao=C3=BBt 2019 =C3=A0 11:59, Benjamin Morel <benjamin.morel@gmai=
l.com> a
=C3=A9crit :

> Hi Internals, I just noticed the following behaviour:
>
>     class A {
>         public int $a;
>         public ?int $b;
>         public ?int $c =3D null;
>     }
>
>     $a =3D new A;
>
>     var_export(get_object_vars($a));
>     var_export(get_class_vars('A'));
>
> Result:
>
>     array (
>         'c' =3D> NULL,
>       )
>     array (
>       'a' =3D> NULL,
>       'b' =3D> NULL,
>       'c' =3D> NULL,
>     )
>
> Is this discrepancy expected? IMO get_object_vars() does the right thing
> and does not include uninitialized properties in the result array.
>
> OTOH, get_class_vars() returns null when the property is uninitialized,
> which I think is confusing (especially when null is not a valid value for
> the property), and I feel like this does not respect the documented
> contract: "get_class_vars =E2=80=94 Get the default properties of the cla=
ss" when
> null is *not* the default value.
>
> I did not file a bug yet as I wanted to gather some feedback first.
> Thank you.
>
> =E2=80=94 Benjamin
>

See https://bugs.php.net/78319
get_class_var() does the most useful thing, thus the correct one to me and
the use cases I have.

Nicolas

>

--000000000000259d980590618094--