John Davidson

Message:

I have associative array of objects. I want to set keys in that array by object field value. All questions I looked at were about grouping, but in my case these values are always unique.

What I have:

<?php



$demo = [

    (object) ['key' => 'a', 'xxx' => 'xxx'],

    (object) ['key' => 'b', 'xxx' => 'xxx'],

    (object) ['key' => 'c', 'xxx' => 'xxx']

];



$result = [];

foreach ($demo as $item) {

    $result[$item->key] = $item;

}



die(print_r($result));

Result:

Array

(

    [a] => stdClass Object

        (

            [key] => a

            [xxx] => xxx

        )



    [b] => stdClass Object

        (

            [key] => b

            [xxx] => xxx

        )



    [c] => stdClass Object

        (

            [key] => c

            [xxx] => xxx

        )

)

But is there better way, without loop? What would be shortest solution, some one-liner?

---

My Answer:
php
$objects = [
(object) ['id' => 1, 'name' => 'John'],
(object) ['id' => 2, 'name' => 'Jane'],
(object) ['id' => 3, 'name' => 'Alice']
];


_What I want:_

php
$objectsByKey = [
1 => (object) ['id' => 1, 'name' => 'John'],
2 => (object) ['id' => 2, 'name' => 'Jane'],
3 => (object) ['id' => 3, 'name' => 'Alice']
];


_Is there a way to achieve this without looping through the array and creating a new one?_