Manipulations

<?php
   $toppings1 = array("Pepperoni", "Cheese", "Anchovies", "Tomatoes");
   $toppings2 = array("Ham", "Cheese", "Peppers");
   $inttoppings = array_intersect($toppings1, $toppings2);
   $difftoppings = array_diff($toppings1, $toppings2);
   $bothtoppings = array_merge($toppings1, $toppings2);
   var_dump($inttoppings);
   var_dump($difftoppings);
   var_dump($bothtoppings);
?>