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Date: Mon, 23 Nov 2015 12:12:22 -0800
Cc: Andrea Faulds <ajf@ajf.me>,
 PHP internals <internals@lists.php.net>
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References: <4D5D4A6D-1E94-4893-B1DF-7A8C616C871A@gmail.com> <20.F5.23339.A9822565@pb1.pair.com> <F032E95B-CA63-4458-ACA6-9019AC1B8D29@gmail.com> <CAFMT4Nqfrw6UvqOk5ZrN0n3uTWKF5h8eUbn=gRVs0y9W6Gf_8w@mail.gmail.com>
To: Levi Morrison <levim@php.net>
Subject: Re: [PHP-DEV] PHP7 Coalesce operator
From: shadda@gmail.com (shadda)

Oh, please, by no means take that as an endorsement for dropping error =
reporting levels. It was just an observation of how PHP actually derives =
a conditional in those situations. It=E2=80=99s not as if there=E2=80=99s =
a fatality in script execution when you make that kind of comparison, =
it=E2=80=99s just a really shitty way to code. In fact, it=E2=80=99s =
also why i typically avoid empty(). Nevertheless, PHP lacks a concise =
solution for dealing with multiple possibly-false-evaluating values.=20

Hacks like my coalesce() function that rely on the side effect of =
reference-passing can only go so far, as there=E2=80=99s also no way to =
pass &N references (at least that I=E2=80=99m aware of, correct me if =
I=E2=80=99m wrong)

I mean really I just want to be able to easily and lazily handle =
situations where I=E2=80=99ve got several vars as possible values in an =
assignment or expression, without chaining lots of function calls. =
Perhaps if empty() took N params like isset() does, but that=E2=80=99s =
only a nudge in the, er, =E2=80=9Cright=E2=80=9D direction.
=20
> On Nov 23, 2015, at 12:03 PM, Levi Morrison <levim@php.net> wrote:
>=20
>> In practice, you can ignore E_NOTICE and php will happily treat null =
and !isset() as the same thing in *most* cases, so that=E2=80=99s not a =
good indicator of truthiness.
>=20
>=20
> If you really believe that then this is all you need already:
>=20
>    $database =3D $config['database'] ?: 'db';
>=20
> Correct?