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Date: Mon, 8 Sep 2014 04:47:45 -0400
Message-ID: <CAL+t6cH_nGq=5P2_RxRMK7cxY3n3jNDHREAZJug21fvk0P_8rA@mail.gmail.com>
To: Michael Wallner <mike@php.net>
Cc: Andrea Faulds <ajf@ajf.me>, Pierre Joye <pierre.php@gmail.com>, 
	PHP internals <internals@lists.php.net>
Content-Type: multipart/alternative; boundary=047d7ba977e86dc7e1050289df6c
Subject: Re: [PHP-DEV] [RFC] Implicit isset() in Shorthand Ternary Operator
From: theanomaly.is@gmail.com (Sherif Ramadan)

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On Mon, Sep 8, 2014 at 4:06 AM, Michael Wallner <mike@php.net> wrote:

> On 07/09/14 14:25, Andrea Faulds wrote:
>
> >
> > There=E2=80=99s actually a quite serious issue just now, which is that =
it
> > evaluates the first operand twice if it=E2=80=99s not empty. This is be=
cause
> > $a ?: $b is expanded to empty($a) ? $b : $a, such that if you did
> > something which mutates state in there, it=E2=80=99d happen twice. This=
 is
> > obviously not good, and I=E2=80=99m going to figure out how to fix this=
.
> >
>
> This could very well be the reason why it is like it is today.
>
>
I agree. The more I think about, the more this seems weird. What if I
explicitly want to use ternary to check isset() and not empty?

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