Online PHP editor | refs for E783F

<?php $all_arrays = [ array(0, 7, 5, 0), array(2, 6, 10, 0), array(4, 8, 15, 10), array(6, 7, 20, 10), array(1, 2, 3, 4), array(5, 6, 7, 8), // more arrays ]; $each_array_count = count($all_arrays[0]); // 4 $all_arrays_count = count($all_arrays); // 6 $output = []; for ($i = 0; $i < $each_array_count; $i++) { for ($j=0; $j < $all_arrays_count; $j++) { $output[$i] += $all_arrays[$j][$i] / $all_arrays_count; } } echo "<pre>"; var_dump($output);