Lester Caine wrote on 19/01/2016 11:49:
If we ever add object literals, then
>we could do object destructuring with a symmetrical syntax.
Andrea, please bare with me as I'm trying to work out just what some of
those long words actually mean.
I think what Andrea's getting at is being able to do something similar
to what you can do in JS:
// Object literal: create an object with all its values
var foo = { a: 1, b: 2, c: 3 };
// Destructure an object into variables: take bits of an object that
you're interested in all in one go
// equivalent to bob = foo.a; jane = foo.c;
var {a: bob, c: jane} = foo;
In PHP, we don't have either of these on objects - you can only create
an object using a constructor function - but the proposal is basically
the same thing for associative arrays (which are in some ways similar to
JS objects anyway):
// Array literal
$foo = ['a' => 1, 'b' => 2, 'c' => 3];
// Destructuring with list()
list('a' => $bob, 'c' => $jane);
So it's like extract(), but both more powerful and less dangerous - you
don't get an unexpected variable $b when someone adds a key to the
array, and you have the ability to rename $a and $c while you're
extracting them.
It may or may not work for your use case, but it doesn't really have
anything to do with objects either way.
Regards,
--
Rowan Collins
[IMSoP]
--
PHP Internals - PHP Runtime Development Mailing List
To unsubscribe, visit: http://www.php.net/unsub.php
