Convert index array into multidimensional associative/index array in php

Question

My array looks like this

Array
(
    [0] => A
    [1] => B
    [2] => C
)

Desired array

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

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

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

I have gone through these links but didn't able to figure out the solution being a newbie.

Convert associative array into indexed

convert indexed multidimensional array to associative multidimensional array

there is no inbuilt function for it, so you need to loop over the current array and build your expected output, 1 line of code — Lawrence Cherone, Nov 09 '18 at 14:38

score 5 · Answer 1 · answered Nov 09 '18 at 14:39

5

For example:

$new_array = array_map(
    function ($v) { return [$v]; }, 
    ['A', 'B', 'C']
);

answered Nov 09 '18 at 14:39

u_mulder

54,101
5
48
64

score 1 · Answer 2 · answered Nov 09 '18 at 14:38

1

$arrOld = ['A','B','C','D','E'];
$arrNew = [];
foreach($arrOld as $key => $value){
    $arrNew[] = [$key => $value];
}

answered Nov 09 '18 at 14:38

TsV

629
4
7

score 1 · Accepted Answer · answered Nov 09 '18 at 14:42

This is a blanket statement on how to get your desired array :

$desired_array = array(array("0"=>"A"), array("0"=>"B"), array("0"=>"C"));

However, dynamically, you could do the following :

//Assume $original_array = array("0"=>"A", "1"=>"B", "2"=>"C");

$desired_array = array(); // New Array
for($i = 0; $i < count($original_array); $i++){ // Loop over all elements in original array
array_push($desired_array, array("0"=>$original_array[$i])); // Place each valueable as an array in new desired array
}

Convert index array into multidimensional associative/index array in php

3 Answers3