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Date: Thu, 7 Nov 2013 13:31:14 +0100
Cc: List PHP Mailing List <internals@lists.php.net>,
  Dmitry Stogov <dmitry@zend.com>
Message-ID: <4DBA0F2B-4B6B-4A19-9B53-9C16352D1D71@strojny.net>
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To: Bob Weinand <bobwei9@hotmail.com>
Subject: Re: [PHP-DEV] [RFC] Constant Scalar Expressions (with constants)
From: lars@strojny.net (Lars Strojny)

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Hi Bob,

thanks for your work, it=92s awesome. One thing about constants:

Take this example:

const FOO =3D 2;

class Klass
{
   const FOO =3D 1;
   const BAR =3D FOO;
}

Here FOO is ambiguous, as it could resolve to 2 or to 1. If I understood =
it correctly, global constants are not yet implemented but I would =
suggest to always force prefixing the constant to get rid of the =
ambiguity and allow for future extension.

const FOO =3D 2;

class Klass
{
   const FOO =3D 1;
   const BAR =3D self::FOO;
}

Does that make sense?

cu,
Lars

On 07 Nov 2013, at 13:01, Bob Weinand <bobwei9@hotmail.com> wrote:

> Hi!
>=20
> As you all know, Anthony Ferrara had withdrawn his RFC a few months =
ago, which was without support for constants in these expressions:
>=20
> const foo =3D 10;
> const bar =3D 10 * foo;
>=20
> The use of a constant in a declaration of a constant was not yet =
possible with his patch.
>=20
> That's what I changed.
>=20
> Enjoy reading the RFC at:
>=20
> https://wiki.php.net/rfc/const_scalar_exprs
>=20
> Bob Weinand
>=20
> Special thanks go to Dmitry who had helped me a lot with feedback and =
a deep review of the patch.
> --
> PHP Internals - PHP Runtime Development Mailing List
> To unsubscribe, visit: http://www.php.net/unsub.php
>=20


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