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Date: Tue, 25 Aug 2015 09:48:28 -0400
Message-ID: <CAL+t6cHfJWkk4pbUJ3E=5huytMNQmJ0Le=Mt4iSmyJ_cxOCbZg@mail.gmail.com>
To: Nicolai Scheer <nicolai.scheer@gmail.com>
Cc: PHP Internals <internals@lists.php.net>
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Subject: Re: [PHP-DEV] Notice on non existing array key (on a boolean)
From: theanomaly.is@gmail.com (Sherif Ramadan)

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Hey Nicolai,

You're right. The notice is triggered by array_push behavior only, which
means that $x = true; echo $x['foo']; doesn't trigger the notice, which is
the same as your code above. Only write operations have historically
resulted in this notice.

I would agree that providing the notice would help someone debugging
potentially buggy code like this. Not sure if this is something we can
squeeze into 7.0.0 release at this point, but I would consider it a bug fix
with BC rather than something that should be subject to current feature
freeze.



On Tue, Aug 25, 2015 at 9:35 AM, Nicolai Scheer <nicolai.scheer@gmail.com>
wrote:

> Hi all,
>
> I'd expect the following code to throw a notice/warning:
>
> $x = true;
> $y = $x['foo'];
>
> It executes completely silently.
> $y is NULL afterwards, which is expected, since the right hand side of
> the assignment is undefined.
>
> If $x was an array (e.g. empty array), a E_NOTICE would be emitted.
>
> Can anyone shed a light on this behaviour? If accessing non existing
> array keys is worth a notice, shouldn't accessing an array index on a
> non array be worth a notice as well (maybe even a warning)?
>
> The other way round emits a warning (i.e. writing to an array key on a
> non array):
>
> $x = true;
> $x['foo'] = 'bar';
>
> Warning: Cannot use a scalar value as an array ...
>
> Thanks for any insight,
>
> greetings
>
> Nico
>
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