Shopping Cart Help

[nblackwood]

Hey all. I have an issue with a shopping cart I developed. Everything works the way its supposed to, but when I try and create a function that counts the number of items in the cart, I can't get it to work properly. I want to say something like:

 

"You have 0 items in your cart"

 

I want to display this on most pages. I know how to use the count function, but I'm having troubles with it. Here is the code snippit for my cart. Any help is appreciated.

 

<?php 
session_start();




ini_set('display_errors', 1);
error_reporting(E_ALL);

define("PRODUCTCODE", 0);
define("PRODUCTNAME", 1);
define("QUANTITY", 2);
define("PRICE", 3);

if ($_SERVER['REQUEST_METHOD'] == 'POST')
{
   if (isset($_POST['productcode']))
   {
      AddToCart();
   }
   else
   {
      $action = isset($_POST['action']) ? $_POST['action'] : '';
      $value = strtoupper(substr($action, 0, 5));
      switch ($value)
      {
      // continue shopping
      case "CONTI":
         header("Location: "."index.php");
         break;

      // recalculate
      case "RECAL": 
         RecalculateCart();
         break;

      // proceed to checkout
      case "CHECK":
         header("Location: "."checkout.php");
         break;
      } 
   }
} 


function AddToCart()
{
   $cart = isset($_SESSION['cart']) ? $_SESSION['cart'] : '';
   $itemcount = isset($_SESSION['itemcount']) ? $_SESSION['itemcount'] : 0;

   $cart[PRODUCTCODE][$itemcount] = $_POST['productcode'];
   $cart[PRODUCTNAME][$itemcount] = $_POST['productname'];
   $cart[QUANTITY][$itemcount] = intval($_POST['quantity']);
   $cart[PRICE][$itemcount] = $_POST['price'];
   $itemcount = $itemcount + 1;

   $_SESSION['cart'] = $cart;
   $_SESSION['itemcount'] = $itemcount;
} 


function RecalculateCart()
{
   $cart = isset($_SESSION['cart']) ? $_SESSION['cart'] : '';
   $itemcount = isset($_SESSION['itemcount']) ? $_SESSION['itemcount'] : 0;

   for ($i=0; $i<$itemcount; $i++)
   {
      $quantity = $_POST['quantity'.($i)];
      if (empty($quantity))
      {
         $quantity = 0;
      }
      else
      if (($quantity < 0) || (!is_numeric($quantity)))
      {
         $quantity = 0;
      } 
      $cart[QUANTITY][$i] = intval($quantity);
   }

   for ($j=0; $j<$itemcount; $j++)
   {
      $quantity = $cart[QUANTITY][$j];

      // remove item from the cart
      if ($quantity == 0)
      {
         $itemcount--;
        
         $curitem = $j;

         while(($curitem+1) < count($cart[0]))         
         {
            for ($k=0; $k<4; $k++)
            {
               $cart[$k][$curitem] = $cart[$k][$curitem+1];
               $cart[$k][$curitem+1] = '';
            }
            $curitem++;
         } 
      } 
   }
   $_SESSION['itemcount'] = $itemcount;
   $_SESSION['cart'] = $cart;
} 

?>

[googlit]

Hi i use the following, which could be adapted for your needs:

 

to echo "you have X items in your cart use the following:

<?php
// Include functions
require_once('functions.php');
?>
//echo cart message
<?php
echo writeShoppingCart();
?>

 

you will need to include the following in your functions file:

 

<?php
function writeShoppingCart() {
$cart = $_SESSION['cart'];
if (!$cart) {
	return '<p>Your basket is empty.</p>';
} else {
	// Parse the cart session variable
	$items = explode(',',$cart);
	$s = (count($items) > 1) ? 's':'';
	return '<p>You have <a href="cart.php">'.count($items).' item'.$s.' in your shopping basket</a></p>';
}
}
?>

 

you will need to edit the variables to match your requirements, but should hopefully help you out...