count total items in cart

[designfront]

hi all trying to count all items in my cart this is wht ime trying right now it works fine but if i add more of the same product it doesnt count it, how would i go about that? thanks in advance

 

function  render_mini_cart()
{
   $shopping_cart = get_shopping_cart();
   $product_count = 0;
   $items = $product_count;
   foreach ($shopping_cart->GetItems() as $product_id)
   {
        $product_count++;
   }
   echo "".$product_count." items";
}

Edited February 6, 2009 by designfront