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Date: Wed, 2 May 2012 11:36:39 +0200
Message-ID: <CAH-PCH5wtv07jLHE=_HzPAJHb-OivB=FdROcyh7dPJn8Tt1dVw@mail.gmail.com>
To: Pierre Joye <pierre.php@gmail.com>
Cc: Laruence <laruence@php.net>, Patrick ALLAERT <patrickallaert@php.net>, 
	Nikita Popov <nikita.ppv@googlemail.com>, PHP internals <internals@lists.php.net>
Content-Type: multipart/alternative; boundary=e89a8ff255aea22dfd04bf0a6cad
Subject: Re: [PHP-DEV] [RFC] Allow non-variable arguments to empty() and isset()
From: tyra3l@gmail.com (Ferenc Kovacs)

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On Wed, May 2, 2012 at 11:10 AM, Pierre Joye <pierre.php@gmail.com> wrote:

> hi,
>
> On Wed, May 2, 2012 at 10:46 AM, Laruence <laruence@php.net> wrote:
>
> >    so I think if you want to change empty, you should also change isset=
.
>
> An expression is not set per se. isset goals, by design, from the very
> 1st day, is to test the existence of a variable and a variable only.
>

"Returns TRUE if var exists and has value other than NULL, FALSE otherwise.=
"

$foo=3Dnull;
var_dump(isset($foo)); //prints bool(false)


>
> empty() on the other hand, tests if something is empty, and only if it
> is empty. The result of an expression can be empty.
>
>
an expression can also have a value of null.

--=20
Ferenc Kov=C3=A1cs
@Tyr43l - http://tyrael.hu

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