Online PHP editor | refs for PcS45

<?php $array1 = array ("apple","banana","papaya","watermelon","avocado"); $array2 = array ("apple","avocado"); $set = []; foreach($array2 as $element){ $set[$element] = true; } $result = []; foreach($array1 as $element){ if(!isset($set[$element])){ $result[] = $element; } } print_r($result);