这些是错误
注意：未定义变量：第 7 行 C:\xampp\htdocs\PHPExercise\go4shop\functions.php 中的错误
函数.php
<?php
function pf_validate_number($value, $function, $redirect) {
if(isset($value) == TRUE) {
if(is_numeric($value) == FALSE) {
$error = 1;
}
if($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>£" . sprintf('%.2f', $itemsrow['price']) . "</strong></td>";
echo "<td><strong>£". 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>£". 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>";
}
}
?>
注意：未定义的索引：第 15 行 C:\xampp\htdocs\PHPExercise\go4shop\addtobasket.php 中的 SESS_ORDERNUM
注意：未定义索引：第 20 行 C:\xampp\htdocs\PHPExercise\go4shop\addtobasket.php 中的 SESS_LOGGEDIN
致命错误：在第 31 行调用 C:\xampp\htdocs\PHPExercise\go4shop\addtobasket.php 中未定义的函数 session_register()
添加到basket.php
<?php
session_start();
require("config.php");
require("functions.php");
$validid = pf_validate_number($_GET['id'],"redirect", $config_basedir);
$prodsql = "SELECT * FROM products WHERE id = " . $_GET['id'] . ";";
$prodres = mysql_query($prodsql);
$numrows = mysql_num_rows($prodres);
$prodrow = mysql_fetch_assoc($prodres);
if($numrows == 0){
header("Location: " . $config_basedir);
}
else{
if($_POST['submit']) {
if($_SESSION['SESS_ORDERNUM']) {
$itemsql = "INSERT INTO orderitems(order_id,product_id, quantity) VALUES(". $_SESSION['SESS_ORDERNUM'] . ", ". $_GET['id'] . ", ". $_POST['amountBox'] . ")";
mysql_query($itemsql);
}
else {
if($_SESSION['SESS_LOGGEDIN']) {
$sql = "INSERT INTO orders(customer_id,registered, date) VALUES(". $_SESSION['SESS_USERID'] . ", 1, NOW())";
mysql_query($sql);
session_register("SESS_ORDERNUM");
$_SESSION['SESS_ORDERNUM'] = mysql_insert_id();
$itemsql = "INSERT INTO orderitems(order_id, product_id, quantity) VALUES(". $_SESSION['SESS_ORDERNUM']. ", " . $_GET['id'] . ", ". $_POST['amountBox'] . ")";
mysql_query($itemsql);
}
else {
$sql = "INSERT INTO orders(registered,date, session) VALUES(". "0, NOW(), '" . session_id() . "')";
mysql_query($sql);
session_register("SESS_ORDERNUM");
$_SESSION['SESS_ORDERNUM'] = mysql_insert_id();
$itemsql = "INSERT INTO orderitems(order_id, product_id, quantity) VALUES(". $_SESSION['SESS_ORDERNUM'] . ", " . $_GET['id'] . ", ". $_POST['amountBox'] . ")";
mysql_query($itemsql);
}
}
$totalprice = $prodrow['price'] * $_POST['amountBox'] ;
$updsql = "UPDATE orders SET total = total + ". $totalprice . " WHERE id = ". $_SESSION['SESS_ORDERNUM'] . ";";
mysql_query($updres);
header("Location: " . $config_basedir . "showcart.php");
}
else {
require("header.php");
echo "<form action='addtobasket.php?id=". $_GET['id'] . "' method='POST'>";
echo "<table cellpadding='10'>";
echo "<tr>";
if(empty($prodrow['image'])) {
echo "<td><imgsrc='./productimages/dummy.jpg' width='50' alt='". $prodrow['name'] . "'></td>";
}
else {
echo "<td><img src='./productimages/" . $prodrow['image']. "' width='50' alt='" . $prodrow['name']. "'></td>";
}
echo "<td>" . $prodrow['name'] . "</td>";
echo "<td>Select Quantity <select name='amountBox'>";
for($i=1;$i<=100;$i++) {
echo "<option>" . $i . "</option>";
}
echo "</select></td>";
echo "<td><strong>£". sprintf('%.2f', $prodrow['price']) . "</strong></td>";
echo "<td><input type='submit' name='submit' value='Add to basket'></td>";
echo "</tr>";
echo "</table>";
echo "</form>";
}
}
?>