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Date: Thu, 21 Apr 2011 00:56:48 +0100
Message-ID: <BANLkTinRpxgoYBc=H1uBqwLiCOmKA3zD+A@mail.gmail.com>
To: Hannes Landeholm <landeholm@gmail.com>
Cc: internals@lists.php.net
Content-Type: text/plain; charset=ISO-8859-1
Subject: Re: [PHP-DEV] Implicit isset/isempty check on short-ternary operator
From: arraypad@gmail.com (Arpad Ray)

On Thu, Apr 14, 2011 at 3:05 PM, Hannes Landeholm <landeholm@gmail.com> wrote:
> Some suggested that the ternary if comparison should suppress the notice
> automatically. This would break existing code and also be confusing since
> people expect a ternary if and normal if to work the same way.
>
> Some suggested ?? as an array access operator that suppresses the notice and
> has 3 variants: A: nothing specified - uses null as default, B: has default
> specified, C: returns X if index exists or Y if index doesn't exist. This
> effectively solves the code duplication problem and is a shortcut for saying
> "the array index may or may not exist".
>
> One person said that the relation between ? and ?? and == and === would make
> the operator non-intuitive. Other people disagreed and claimed the opposite.
>
> So basically the discussion now is what exact characters that should be used
> to represent this operator? I really hope we can get this implemented
> quickly... I worked with $_POST yesterday and I could really use that ??
> operator.

Hi,

I must say that the prospect of yet more new syntax is scary. It
really looks like Perl, and I wouldn't have the slightest clue what it
meant if I'd missed the release notes.

I've pined for something like coalesce($_GET['foo'], $defaults['foo'],
42) for years, and I think that style is far more in keeping with the
PHP ethos, and far more readily understandable than this suggested new
syntax.

If I've missed some argument against this then please correct me.

Regards,

Arpad