PHP - How to name an array

Question

I want to create an array that contains multiple arrays. Each with a name. My code is pretty basic:

$main_array = array();

  $sub_array = array();

    $example1 = array("value1");
    $example2 = array("value2");
    $example3 = array("value3");

    array_push($sub_array,$example1);
    array_push($sub_array,$example2);
    array_push($sub_array,$example3);

  array_push($main_array,$sub_array);

This produces the following result:

Array
(
    [0] => Array
        (
            [0] => Array
                (
                    [0] => value1
                )

            [1] => Array
                (
                    [0] => value2
                )

            [2] => Array
                (
                    [0] => value3
                )

        )

)

I was hoping I could have something like this instead:

["main_array"] => Array
(
    ["sub_array"] => Array
        (
            ["example1"] => Array
                (
                    [0] => value1
                )

            ["example2"] => Array
                (
                    [0] => value2
                )

            ["example3"] => Array
                (
                    [0] => value3
                )

        )

)

Is that even possible?

Answer 1

try with this

$sub_array['example1'] = $example1;
$sub_array['example2'] = $example2;
$sub_array['example3'] = $example3;

instead of

array_push($sub_array,$example1); 
array_push($sub_array,$example2);
array_push($sub_array,$example3);