quick question about shopping cart
Posted: Tue Jul 27, 2004 10:59 am
feyd | Please use
feyd | Please use
Code: Select all
tags when posting code. Read: [url=http://forums.devnetwork.net/viewtopic.php?t=21171]Posting Code in the Forums[/url][/color]
sorry...but i have a quick question...my shopping cart that i built of the macromedia persistent cart example... works perfectly fine when i'm adding items numbers to it such as 1000354, 3500035, or 3053535, but as soon as i add a letter to the end of one of those part numbers...lets say the number is....1004400F, (http://127.0.0.1/testshopping/cart.php? ... &qty=1) i get a Warning: mysql_fetch_row(): supplied argument is not a valid MySQL result resource error....if anyone could help i would greatly appreciate it...thank you very much....
this is the cart.php..if this helps..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;
}
case "default":
{
ShowCart();
}
}
function AddItem($itemId, $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 itemId = $itemId");
$row = mysql_fetch_row($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, itemId, qty) values('" . GetCartId() . "', $itemId, $qty)");
}
else
{
// This item already exists in the users cart,
// we will update it instead
UpdateItem($itemId, $qty);
}
}
function UpdateItem($itemId, $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($itemId);
}
else
{
mysql_query("update cart set qty = $qty where cookieId = '" . GetCartId() . "' and itemId = $itemId");
}
}
function RemoveItem($itemId)
{
// 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 itemId = $itemId");
}
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 data_det on cart.itemId = data_det.itemId where cart.cookieId = '" . GetCartId() . "' order by data_det.itemManu asc");
?>feyd | Please use
Code: Select all
tags when posting code. Read: [url=http://forums.devnetwork.net/viewtopic.php?t=21171]Posting Code in the Forums[/url][/color]