Online PHP editor | output for pa3PH

<?php $arr1 = Array ( 'one' => 10, 'two' => 20, 'three' => 50, 'four' => 80, 'five' => 100 ); $arr2 = Array ( 'three' => 20, 'five' => 20, 'six' => 100, 'seven' => 10 ); $arr3 = Array ( 'one' => 30, 'three' => 30, 'five' => 10, 'eight' => 10 ); $array = array_merge_recursive($arr1,$arr2,$arr3); $key= "two"; If(is_array($array[$key])){ $avg = array_sum($array[$key])/count($array[$key]); }Else{ $avg = $array[$key]; } Echo $avg;