This is a RFC karma request for my wiki account.
I want to create a RFC with my proposal: Improve null-coalescing
operator (??) adding empty check (??:)
First list message is: http://news.php.net/php.internals/101606
The main idea is simplify "empty" check on non existing keys or object
attributes. Same as "?:" but also checking undefined.
Current check:
$value = empty($user->thisOptionalAttributeCanBeEmptyOrNotExists) ?
'without value' : $user->thisOptionalAttributeCanBeEmptyOrNotExists;
New feature:
$value = $user->thisOptionalAttributeCanBeEmptyOrNotExists ??: 'without
value';
I think that could be very usefull on inline "exists" + "not empty"
checks with a more clear code.
It's possible?
Thanks,
Lito.
On 17/01/18 19:47, Lito wrote:
On 17/01/18 19:43, Andrey Andreev wrote:
Hi,
On Wed, Jan 17, 2018 at 8:28 PM, Lito <i...@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.
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