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Date: Tue, 11 Jul 2017 12:24:54 -0300
Message-ID: <CAEsg9X2ECG62i7Z_Nu11kqr7yVBkmUcd3MxGt78ULAmpFx--_w@mail.gmail.com>
To: Mark Shust <mark@shust.com>
Cc: PHP Internals <internals@lists.php.net>
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Subject: Re: [PHP-DEV] array coalesce operator concept
From: david.proweb@gmail.com (David Rodrigues)

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The idea is good, but I don't know if it is more clear than an 'if()'

Em 11 de jul de 2017 12:15 PM, "Mark Shust" <mark@shust.com> escreveu:

> Hello,
>
> I wanted to garnish feedback on a RFC proposal. This is just a concept at
> this point, and is inspired by the null coalesce operator.
>
> Code will error if a non-array value is passed through a looping feature.
> For example, this code:
>
> <?php
>
> $foo = "abc";
>
> foreach ($foo as $bar) {
>
>   echo $bar;
>
> }
>
>
> will result in the error:
>
> PHP Warning:  Invalid argument supplied for foreach() in test.php on line 3
>
>
> To prevent this, the logical solution is to wrap this in an is_array check:
>
> <?php
>
> $foo = "abc";
>
> if (is_array($foo)) {
>
>   foreach ($foo as $bar) {
>
>     echo $bar;
>
>   }
>
> }
>
>
> This code runs successfully and does not error out. For a syntactic
> sugar/improvement, this can be shorthand for executing the loop instead of
> wrapping the block within an is_array check:
>
>
> <?php
>
> $foo = "abc";
>
> foreach (??$foo as $bar) {
>
>   echo $bar;
>
> }
>
>
> Let me know your thoughts.
>
>
> Cheers,
> Mark
>

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