Question

php代码 求数组平均值

$a3 = array(array(11,12, 13),array(21,22,23, 24, 25),array(31,32,33, 35),array(41,42,43));

Answer 1

$a3 = array(array(11,12, 13),array(21,22,23, 24, 25),array(31,32,33, 35),array(41,42,43));
$total = 0;
foreach($a3 as $key=>$value){

  $total += array_sum($value);
}

$num = count($a3,COUNT_RECURSIVE);
$average = $total/$num;
echo $average;