Code: Select all
<?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($style_id, $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
$result = mysql_query("select count(*) from cart where CookieID = '" . GetCartID() . "' and style_id = '{$_REQUEST['style_id']}'");
$row = mysql_fetch_row($result);
$numRows = $row[0];
if($numRows == 0)
{
// This item doesn't exist in the users cart,
// we will add it with an insert query
@mysql_query("insert into cart(CookieID, style_id, qty) values('" . GetCartID() . "', $style_id, $qty)");
}
else
{
// This item already exists in the users cart,
// we will update it instead
UpdateItem($style_id, $qty);
}
}
function UpdateItem($style_id, $qty)
{
// Updates the quantity of an item in the users cart.
// If the quantity 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($style_id);
}
else
{
mysql_query("update cart set qty = $qty where CookieID = '" . GetCartID() . "' and style_id = $style_id");
}
}
function RemoveItem($style_id)
{
// 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 style_id = $style_id");
}
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;
$result = mysql_query("select * from cart inner join styles on cart.style_id = styles.style_id where cart.CookieID = '" . GetCartID() . "' order by styles.style asc");
?>
<html>
<head>
<title> Shopping Cart </title>
<script language="JavaScript">
function UpdateQty(styles)
{
style_id = style;
newQty = styles.options[styles.selectedIndex].text;
document.location.href = 'cart.php?action=update_item&id='+style_id+'&qty='+newQty;
}
</script>
</head>
<body bgcolor="#ffffff">
<h1>Your Shopping Cart</h1>
<form name="frmCart" method="get">
<table width="100%" cellspacing="0" cellpadding="0" border="0">
<tr>
<td width="15%" height="25" bgcolor="red">
<font face="verdana" size="2" color="white">
<b>Quantity</b>
</font>
</td>
<td width="55%" height="25" bgcolor="blue">
<font face="verdana" size="2" color="white">
<b>Product</b>
</font>
</td>
<td width="20%" height="25" bgcolor="red">
<font face="verdana" size="2" color="white">
<b>Price Each</b>
</font>
</td>
<td width="10%" height="25" bgcolor="blue">
<font face="verdana" size="2" color="white">
<b>Remove Item</b>
</font>
</td>
</tr>
<?php
while($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 $row["style_id"]; ?>" onChange="UpdateQty(this)">
<?php
for($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="2" color="black">
<?php echo $row["style"]; ?>
</font>
</td>
<td width="20%" height="25">
<font face="verdana" size="2" color="black">
$<?php echo number_format($row["price"], 2, ".", ","); ?>
</font>
</td>
<td width="10%" height="25">
<font face="verdana" size="2" color="black">
<a href="cart.php?action=remove_item&id=<?php echo $row["style_id"]; ?>">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="2" color="black">
<a href="category.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
}
?>