如何计算多数组中的和时的平均值

Question

i have already function that SUM sub arrays which has matches keys like this

 $totals = array();
 $count_loops = 0 ; 
    // First get our totals.
        foreach ($average as $subKey => $subArray) {
            foreach ($subArray as $k => $v) {
                // Add the column to our total.
                $totals[$k] = isset($totals[$k] ) ? $totals[$k] + $v / $count_loops : $v;
            }
        }

and return total array like this

Array
(
    [john_total] => 519.44
    [adam_total] => 1664.64
    [sara_total] => 1237.53
}

but i want to return average after sum bu divide sum number with count loops,but it return wrong average..if i delete this code / $count_loops it sum good..so how to do this

Answer 1

Think you can use : array_sum and count function in PHP :

$totals = array();
 $count_loops = 0 ; 
    // First get our totals.
        foreach ($average as $subKey => $subArray) {
            $totals[$k] = array_sum($subArray) / count($subArray);
        }