Laravel / PHP为值添加键

Question

I have an array like so:

[5, 2, 9] 

However, I need this array:

[0 => 5, 1 => 2, 2 => 9]

So I need the index as key. Is there a function to achieve this? Now I create an empty array manually and I use array_push through a foreach loop. It works, however this doesn't seem elegant.

Is there a better solution?

Answer 1

$array = [5, 2, 9];

print_r($array);

outputs:

Array
(
    [0] => 5
    [1] => 2
    [2] => 9
)