How to sum all column values in multi-dimensional array?

Question

How can I add all the columnar values by associative key? Note that key sets are dynamic.

Input array:

Arr         


        

Answer 1

    $resultat = array();

foreach ($myArray as $myArray_key => $myArray_data) {
    foreach ($myArray_data as $key => $data) {
        $resultat[$key] += $data;
    }
}

print_r($resultat);