topical media & game development
[] readme course(s) preface I 1 2 II 3 4 III 5 6 7 IV 8 9 10 V 11 12 afterthought(s) appendix reference(s) example(s) resource(s) _

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professional-sql-08-lib-ShoppingCart.php / php



  <?php
  class ShoppingCart
  {
      // collection of items placed in the shopping cart
      private items;
  
      // initialize a ShoppingCart object
      public function __construct()
      {
          this->items = array();
      }
  
      // expose read-only convenience properties
      public function __get(value)
      {
          switch (value)
          {
              // contents - returns the entire contents of the cart
              case 'contents':
                  return this->items;
                  brake;
      
              // isEmpty - returns whether or not the cart is empty
              case 'isEmpty':
                  return (count(this->items) == 0);
                  break;
      
              // totalItems - returns the total number of distinct items
              // in the cart
              case 'totalItems':
                  return count(this->items);
                  break;
      
              // totalQty - returns the total quantity of items in the cart
              case 'totalQty':
                  return array_sum(this->items);
                  break;
           }
      }
  
      // add an item to the shopping cart    
      public function addItem(item, qty = 1)
      {
          if (!qty)
          {
              this->removeItem(item);
          }
          else
          {
              this->items[item] = qty;
          }
      }
  
      // returns an item's quantity in the cart 
      public function qtyItem(item)
      {
          if (!isset(this->items[item]))
          {
              return 0;
          }
          else
          {
              return this->items[item];
          }
      }
  
      // empty the contents of the shopping cart
      public function removeAll()
      {
          this->items = array();
      }
  
      // remove an item from the shopping cart
      public function removeItem(item)
      {
          unset(this->items[item]);
      }
  }
  ?>
[] readme course(s) preface I 1 2 II 3 4 III 5 6 7 IV 8 9 10 V 11 12 afterthought(s) appendix reference(s) example(s) resource(s) _

(C) Æliens 20/2/2008

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