hello
I have a code for a shopping cart but it doesnt seem to work...i was wondering if anyone can help.
I have two tables: one called Products with the attributes ProdID (primary key), Product, Prodname,Proadtype, Supplier, Price and another called cart with the attributes cartID (primary key), cookieID, ProdID, qty.
The products table as all the items that can be purchased in it and cart should contain all the orders made.
here is the code:
<?php
include("db.php");
switch($_GET["action"])
{
case "add_item":
{
AddItem($_GET["id"], $_GET["qty"]);
ShowCart();
break;
}
case "update_item":
{
UpdateItem($_GET["id"], $_GET["qty"]);
ShowCart();
break;
}
case "remove_item":
{
RemoveItem($_GET["id"]);
ShowCart();
break;
}
default:
{
ShowCart();
}
}
function AddItem($ProdID, $qty)
{
// Will check whether or not this item
// already exists in the cart table.
// If it does, the UpdateItem function
// will be called instead
global $dbServer, $dbUser, $dbPass, $dbName;
// Get a connection to the database
$cxn = @ConnectToDb($dbServer, $dbUser, $dbPass, $dbName);
// Check if this item already exists in the users cart table
$result = mysql_query("select count(*) from cart where cookieID = '" . GetCartId() . "' and ProdID = $ProdID");
$row = mysql_fetch_row($result);
$numRows = $row[0];
if($numRows == 0)
{
// This item doesn't exist in the users cart,
// we will add it with an insert query
@("insert into cart(cookieID, ProdID, qty) values('" . GetCartId() . "', $ProdID, $qty)");
}
else
{
// This item already exists in the users cart,
// we will update it instead
UpdateItem($ProdID, $qty);
}
}
function UpdateItem($ProdID, $qty)
{
// Updates the quantity of an item in the users cart.
// If the qutnaity is zero, then RemoveItem will be
// called instead
global $dbServer, $dbUser, $dbPass, $dbName;
// Get a connection to the database
$cxn = @ConnectToDb($dbServer, $dbUser, $dbPass, $dbName);
if($qty == 0)
{
// Remove the item from the users cart
RemoveItem($ProdID);
}
else
{
mysql_query("update cart set qty = $qty where cookieID = '" . GetCartId() . "' and ProdID = $ProdID");
}
}
function RemoveItem($ProdID)
{
// Uses an SQL delete statement to remove an item from
// the users cart
global $dbServer, $dbUser, $dbPass, $dbName;
// Get a connection to the database
$cxn = @ConnectToDb($dbServer, $dbUser, $dbPass, $dbName);
mysql_query("delete from cart where cookieID = '" . GetCartId() . "' and ProdID = $ProdID");
}
function ShowCart()
{
// Gets each item from the cart table and display them in
// a tabulated format, as well as a final total for the cart
global $dbServer, $dbUser, $dbPass, $dbName;
// Get a connection to the database
$cxn = @ConnectToDb($dbServer, $dbUser, $dbPass, $dbName);
$totalCost = 0;
$result = mysql_query("select * from cart inner join items on cart.ProdID = Products.ProdID where cart.cookieID = '" . GetCartId() . "' order by Products.Prodname asc");
?>
<html>
<head>
<title> Your Shopping Cart </title>
<script language="JavaScript">
function UpdateQty(item)
{
itemId = item.name;
newQty = item.options[item.selectedIndex].text;
document.location.href = 'cart.php?action=update_item&id='+ProdID+'&qty='+newQty;
}
</script>
</head>
<body bgcolor="#ffffff">
<h1>Your Shopping Cart</h1>
<form name="frmCart" method="get">
<table width="100%" cellspacing="0" cellpadding="0" border="0">
<tr>
<td width="15%" height="25" bgcolor="red">
<font face="verdana" size="1" color="white">
<b>Qty</b>
</font>
</td>
<td width="55%" height="25" bgcolor="red">
<font face="verdana" size="1" color="white"
<b>Product</b>
</font>
</td>
<td width="20%" height="25" bgcolor="red">
<font face="verdana" size="1" color="white">
<b>Price Each</b>
</font>
</td>
<td width="10%" height="25" bgcolor="red">
<font face="verdana" size="1" color="white">
<b>Remove?</b>
</font>
</td>
</tr>
<?php
while($row = mysql_fetch_array($result))
{
// Increment the total cost of all items
$totalCost += ($row["qty"] * $row["Price"]);
?>
<tr>
<td width="15%" height="25">
<font face="verdana" size="1" color="black">
<select name="<?php echo $row["ProdID"]; ?>" onChange="UpdateQty(this)">
<?php
for($i = 1; $i <= 20; $i++)
{
echo "<option ";
if($row["qty"] == $i)
{
echo " SELECTED ";
}
echo ">" . $i . "</option>";
}
?>
</select>
</font>
</td>
<td width="55%" height="25">
<font face="verdana" size="1" color="black">
<?php echo $row["Prodname"]; ?>
</font>
</td>
<td width="20%" height="25">
<font face="verdana" size="1" color="black">
$<?php echo number_format($row["iPrice"], 2, ".", ","); ?>
</font>
</td>
<td width="10%" height="25">
<font face="verdana" size="1" color="black">
<a href="cart.php?action=remove_item&id=<?php echo $row["ProdID"]; ?>">Remove</a>
</font>
</td>
</tr>
<?php
}
// Display the total
?>
<tr>
<td width="100%" colspan="4">
<hr size="1" color="red" NOSHADE>
</td>
</tr>
<tr>
<td width="70%" colspan="2">
<font face="verdana" size="1" color="black">
<a href="order2.php"><< Keep Shopping</a>
</font>
</td>
<td width="30%" colspan="2">
font face="verdana" size="2" color="black">
<b>Total: $<?php echo number_format($totalCost, 2, ".", ","); ?></b>
</font>
</td>
</tr>
</table>
</form>
</body>
</html>
<?php
}
?>
Thanx
