Question

嗨，我在php中全新。我试图创建购物车，我有问题：

警告：mysql_fetch_assoc（）期望参数1是资源，   第42行的C：\ xampp \ htdocs \ uwm-shop \ functions.php中给出的布尔值

警告：mysql_num_rows（）要求参数1为resource，boolean   在第45行的C：\ xampp \ htdocs \ uwm-shop \ functions.php中给出

您尚未在购物车中添加任何内容。

这里是它的代码（functions.php）：

   <?php
function pf_validate_number($value, $function, $redirect) {
if(isset($value) == TRUE) {
if(is_numeric($value) == FALSE) {
$error = 1;
}
else if((isset($error)) == 1) {
header("Location: " . $redirect);
}
else {
$final = $value;

}
}
else {
if($function == 'redirect') {
header("Location: " . $redirect);
}
if($function == "value") {
$final = 0;
}
}
return $final;
}
function showcart()
{
if(isset($_SESSION['SESS_ORDERNUM']))
{
if(isset($_SESSION['SESS_LOGGEDIN']))
{
$custsql = "SELECT id, status from orders WHERE customer_id = ". $_SESSION['SESS_USERID']. " AND status < 2;";
$custres = mysql_query($custsql);
$custrow = mysql_fetch_assoc($custres);
$itemssql = "SELECT products.*, orderitems.*, orderitems.id AS itemid FROM products, orderitems WHERE orderitems.product_id =products.id AND order_id = " . $custrow['id'];
$itemsres = mysql_query($itemssql);
$itemnumrows = mysql_num_rows($itemsres);
}
else
{
$custsql = "SELECT id, status from orders WHERE session = '" . session_id(). "' AND status < 2;";
$custres = mysql_query($custsql);
$custrow = mysql_fetch_assoc($custres);
$itemssql = "SELECT products.*, orderitems.*, orderitems.id AS itemid FROM products, orderitems WHERE orderitems.product_id = products.id AND order_id = " . $custrow['id'];
$itemsres = mysql_query($itemssql);
$itemnumrows = mysql_num_rows($itemsres);
}
}
else
{
$itemnumrows = 0;
}
if($itemnumrows == 0)
{
echo "You have not added anything to your shopping cart yet.";
}
else
{
echo "<table cellpadding='10'>";
echo "<tr>";
echo "<td></td>";
echo "<td><strong>Item</strong></td>";
echo "<td><strong>Quantity</strong></td>";
echo "<td><strong>Unit Price</strong></td>";
echo "<td><strong>Total Price</strong></td>";
echo "<td></td>";
echo "</tr>";
while($itemsrow = mysql_fetch_assoc($itemsres))
{
$quantitytotal =$itemsrow['price'] * $itemsrow['quantity'];
echo "<tr>";
if(empty($itemsrow['image'])) {
echo "<td><img src='productimages/dummy.jpg' width='50' alt='" . $itemsrow['name'] . "'></td>";
}
else {
echo "<td><img src='productimages/" .$itemsrow['image'] . "' width='50' alt='". $itemsrow['name'] . "'></td>";
}
echo "<td>" . $itemsrow['name'] . "</td>";
echo "<td>" . $itemsrow['quantity'] . "</td>";
echo "<td><strong>&pound;" . sprintf('%.2f', $itemsrow['price']) . "</strong></td>";
echo "<td><strong>&pound;". sprintf('%.2f', $quantitytotal) . "</strong></td>";
echo "<td>[<a href='delete.php?id=". $itemsrow['itemid'] . "'>X</a>]</td>";
echo "</tr>";
@$total = $total + $quantitytotal;
$totalsql = "UPDATE orders SET total = ". $total . " WHERE id = ". $_SESSION['SESS_ORDERNUM'];
$totalres = mysql_query($totalsql);
}
echo "<tr>";
echo "<td></td>";
echo "<td></td>";
echo "<td></td>";
echo "<td>TOTAL</td>";
echo "<td><strong>&pound;". sprintf('%.2f', $total) . "</strong></td>";
echo "<td></td>";
echo "</tr>";
echo "</table>";
echo "<p><a href='checkout-address.php'>Go to the checkout</a></p>";
}
}
?>

以下是表格：

    CREATE TABLE IF NOT EXISTS `orders` (
      `id` int(11) NOT NULL AUTO_INCREMENT,
      `customer_id` int(11) NOT NULL,
      `registered` int(11) NOT NULL,
      `delivery_add_id` int(11) NOT NULL,
      `payment_type` int(11) NOT NULL,
      `date` datetime NOT NULL,
      `status` tinyint(4) NOT NULL,
      `session` varchar(100) NOT NULL,
      `total` float NOT NULL,
      PRIMARY KEY (`id`)
    ) ENGINE=InnoDB  DEFAULT CHARSET=utf8 AUTO_INCREMENT=25 ;


 + CREATE TABLE IF NOT EXISTS `orderitems` (
  `id` int(11) NOT NULL AUTO_INCREMENT,
  `order_id` int(11) NOT NULL,
  `product_id` int(11) NOT NULL,
  `quantity` int(11) NOT NULL,
  PRIMARY KEY (`id`)
) ENGINE=InnoDB  DEFAULT CHARSET=utf8 AUTO_INCREMENT=40 ;

我试图纠正一些语法。可能缺少这里和那里的order_id而不是SELECT中的id，但改进的效果给了其他错误，所以发送代码orignalny。

请帮助：＆lt;

mysql_fetch_assoc（）期望参数1是资源，布尔值

0 个答案: