How to get the sum of arrays by column?

How to get the sum of these arrays by column?

$arr = [["0","45","0","0","-100","0"],
        ["22","0","0","12","18","0"],
        ["0","0","14","12","0","0"]];

expected output

$sum = ["22","45","14","24","-82","0"];

>Solution :

You can use array_sum() and array_column().

$sums = [];

foreach (array_keys($arr[0]) as $column) {
  $sums[$column] = array_sum(array_column($arr, $column));
}