PHP Sum Of arrays inside a multidimensional array

Question

Need a little help here with summing up arrays inside a multi dimensional php array

Eg Multidimensional array

Array
(
    [0] => Array
        (
              


        

Answer 1

This should work for you:

 $v)
        $result[$k] = array_sum(array_column($arr, $k));

    print_r($result);

?>

Output:

Array ( [0] => 80 [1] => 9 [2] => 14 [3] => 11 [4] => 12 [5] => 15 [6] => 11 [7] => 7 )

EDIT:

If your php version is under 5.4 you can use this simple workaround:

function arrayColumn(array $array, $column_key, $index_key=null){
    if(function_exists('array_column ')){
        return array_column($array, $column_key, $index_key);
    }
    $result = [];
    foreach($array as $arr){
        if(!is_array($arr)) continue;

        if(is_null($column_key)){
            $value = $arr;
        }else{
            $value = $arr[$column_key];
        }

        if(!is_null($index_key)){
            $key = $arr[$index_key];
            $result[$key] = $value;
        }else{
            $result[] = $value;
        }

    }

    return $result;
}

(Note that you have to use arrayColumn())

From the manual comments: http://php.net/manual/de/function.array-column.php#116301