Re: [RFC] [DISCUSSION] Improve null-coalescing operator (??) adding empty check (??:)

From:	Lito	Date:	Wed, 17 Jan 2018 18:47:41 +0000
Subject:	Re: [RFC] [DISCUSSION] Improve null-coalescing operator (??) adding empty check (??:)
References:	1 2 3 4	Groups:	php.internals
Request:	Send a blank email to internals+get-101612@lists.php.net to get a copy of this message

On 17/01/18 19:43, Andrey Andreev wrote:

Hi, On Wed, Jan 17, 2018 at 8:28 PM, Lito <info@eordes.com> wrote:
No $foo ?: 'default' , it's only equivalent to (isset($foo) && $foo) ? $foo : 'default' if $foo exists. Also PHP has added ?? as null-coalescing operator that works with undefined variables/attributes/keys, my proposal is an improvement over this one. I don't want to endorse usage of undefined variables, can be used in a large set of situations, like object attributes, array keys, etc... Anyway thanks for your feedback. Lito.
There is a shorter version:
     empty($foo) ? 'default' : $foo;
And I think that's quite convenient for the few use cases it has (refer to Nikita's reply). Cheers, Andrey. Yes, I think that:

$foo = $foo ??: 'default'; Is more clear and with less code than: $foo = empty($foo) ? 'default' : $foo; As ?? does. Regards, Lito.