10, 'item2' => 5, 'item3' => 20]; $cart = getValue('cart'); echo $cart['item1']; // Output: 10 ?>This code sets a session variable 'cart' to an array of quantities for different items, and then uses the getValue() function to retrieve it and store it in a variable $cart. It then accesses the quantity for 'item1' and outputs it. The package/library used for this function is likely the PHP Session extension, which is included in most PHP installations by default.