Newsgroups: php.internals
Path: news.php.net
Xref: news.php.net php.internals:100963
Mailing-List: contact internals-help@lists.php.net; run by ezmlm
Received-SPF: pass (pb1.pair.com: domain gmail.com designates 209.85.128.181 as permitted sender)
To: "Christoph M. Becker" <cmbecker69@gmx.de>, internals@lists.php.net
References: <7639e065-451b-0f2e-1985-5e3d31ec1b68@gmail.com>
 <363025d5-bd57-01e6-0fba-0120050cd4dc@gmx.de>
Message-ID: <a09a7349-8a0d-d3ff-e6ab-151f67e08c55@gmail.com>
Date: Fri, 27 Oct 2017 13:56:00 +0200
User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:52.0) Gecko/20100101
 Thunderbird/52.4.0
MIME-Version: 1.0
In-Reply-To: <363025d5-bd57-01e6-0fba-0120050cd4dc@gmx.de>
Content-Type: text/plain; charset=utf-8; format=flowed
Content-Language: en-US
Content-Transfer-Encoding: 7bit
Subject: Re: Raise E_NOTICE for null castings
From: zoeslam@gmail.com (Filippo Tessarotto)

I am sorry for partial topic duplication regarding array-access.

Still, at least with `declare(strict_types=1);` auto-castings of 
non-numbers should raise an error:

var_dump(false + 2);
var_dump(null + 2);

Exactly like `"" + 2`.

WDYT? Filippo

Il 27/10/2017 13:47, Christoph M. Becker ha scritto:
> On 27.10.2017 at 11:49, Filippo Tessarotto wrote:
> 
>> Hi, I would like to propose an RFC to raise an E_NOTICE when a variable
>> "initialized" to null is casted to other types:
>>
>> $foo = null;
>> var_dump($foo['bar']);
>> var_dump($foo . 'bar');
>> var_dump($foo + 2);
>> var_dump($foo & 2);
>> // At the time being, this code produces no errors
>>
>> The eventual vote may be split one for each case.
>>
>> What do you think?
> 
> Note that there is already an accepted RFC regarding rasing E_WARNING
> for invalid container read array-access[1].  However, it has not been
> implemented yet, due to difficulties, see the discussion on PR #2031[2].
> 
> [1] <https://wiki.php.net/rfc/notice-for-non-valid-array-container>
> [2] <https://github.com/php/php-src/pull/2031>
>