Hi Guys,
im creating a shopping cart as part of my website
however whenever i try to empty my cart i get the error: ( ! ) Notice: Undefined index: login_user in C:\wamp\www\catalogue.php on line 32
login_user refers to a session that gets created when the user logs in.
Line 32 looks like this: <?php echo "Welcome ".$_SESSION['login_user'];?>! <br> <a href="logout.php">Logout</a>
its a little weird as to why the error occurs when i click empty cart but points towards the line above
the two files in question are login.php and catalogue.php both are below:
**Login.php:
**
`<?php
session_start(); // Starting Session
include_once('config.php');
$error=''; // Variable To Store Error Message
if (isset($_POST['submit'])) {
if (empty($_POST['user']) || empty($_POST['pass'])) {
$error = "Please complete both fields";
}
else
{
// Define $username and $password
$user=$_POST['user'];
$_SESSION['login_user']=$user;
$pass=md5($_POST['pass']);
// To protect MySQL injection for Security purpose
$user = stripslashes($user);
$pass = stripslashes($pass);
$user = mysqli_real_escape_string($mysqli, $user);
$pass = mysqli_real_escape_string($mysqli, $pass);
// SQL query to fetch information of registered users and finds user match.
$query = mysqli_query($mysqli, "SELECT * FROM users where Username='$user' AND Password='$pass'");
$rows = mysqli_num_rows($query);
if ($rows == 1) {
header("location: home.php"); // Redirecting To Other Page
} else {
$error = "Username or Password is invalid";
}
mysqli_close($mysqli); // Closing mysqlinection
}
}
?>
<!doctype html>
<html>
<head>
<link rel="stylesheet" type="text/css" href="style/style.css">
<script type="text/javascript" src="//code.jquery.com/jquery-2.1.3.min.js"></script>
<title>Login</title>
</head>
<body>
<div id = "logReg">
<span href="#" class="button" id="toggle-login">Log in</span>
</div>
<div id="login">
<div id="triangle"></div>
<h1>Log in</h1>
<form action = "" id = "logregform" method = "POST">
<p id = "err"> <?php if(isset($error)) {echo $error;} ?> </p>
<input id = "logtxt" type="text" placeholder="Username" name = "user" required/>
<input type="password" placeholder="Password" name = "pass" required/>
<input type="submit" value="Log in" name = "submit" />
<br>
<br>
<p id ="bklg">Dont have an account? <a href="register.php">Sign up</a></p>
</form>
</div>
<script>
$('#toggle-login').click(function(){
$('#login').slideToggle('fast');
});
</script>
</html>`
**and catalogue.php is:
**
<?php
error_reporting(E_ALL);
ini_set('display_errors', 1);
session_start();
include_once("config.php");
?>
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Shopping Cart</title>
<link href="style/style.css" rel="stylesheet" type="text/css">
</head>
<body>
<br>
<div id="books-wrapper">
<!-- #content to center the menu -->
<div id="content">
<!-- This is the actual menu -->
<ul id="darkmenu">
<li><a href="home.php">Home</a></li>
<li><a href="catalogue.php">Catalogue</a></li>
<li><a href="search.php">Search</a></li>
<li><a href= "view_cart.php">Cart</a></li>
<li><a href="#">Orders</a></li>
</ul>
<div id = "welcome" >
<?php echo "Welcome ".$_SESSION['login_user'];?>! <br> <a href="logout.php">Logout</a>
</div>
</div>
<br><br>
<h1 id = "mainHeader" >Books</h1>
<br>
<div class="books">
<?php
//current URL of the Page. cart_update.php redirects back to this URL
$current_url = base64_encode($url="http://".$_SERVER['HTTP_HOST'].$_SERVER['REQUEST_URI']);
$results = $mysqli->query("SELECT * FROM books ORDER BY Category ASC");
if ($results) {
//fetch results set as object and output HTML
while($obj = $results->fetch_object())
{
echo '<div class="book">';
echo '<form method="post" id = "books" action="cart_update.php">';
echo '<div class="book-thumb"><img src="images/'.$obj->BookImage.'"></div>';
echo '<div class="book-content"><h3>'.$obj->Title.'</h3>';
echo '<br>';
echo '<div class="book-author"><i>'.$obj->BookAuthor.'</i></div>';
echo '<div class="book-desc">'.$obj->BookDesc.'</div>';
echo '<br>';
echo '<div class="book-qty"> In stock: '.$obj->Quantity.'</div>';
echo '<div class="book-info">';
echo 'Price '.$currency.$obj->Price.' | ';
echo 'quantity <input type="text" name="Quantity" value="1" size="3" />';
echo '<button class="add_to_cart">Add To Cart</button>';
echo '</div></div>';
echo '<input type="hidden" name="ISBN" value="'.$obj->ISBN.'" />';
echo '<input type="hidden" name="type" value="add" />';
echo '<input type="hidden" name="return_url" value="'.$current_url.'" />';
echo '</form>';
echo '</div>';
}
}
?>
</div>
<div class="shopping-cart">
<h2>Your Shopping Cart</h2>
<?php
if(isset($_SESSION["books"]))
{
$total = 0;
echo '<ol>';
foreach ($_SESSION["books"] as $cart_itm)
{
echo '<li class="cart-itm">';
echo '<span class="remove-itm"><a href="cart_update.php?removep='.$cart_itm["ISBN"].'&return_url='.$current_url.'">×</a></span>';
echo '<h3>'.$cart_itm["Title"].'</h3>';
echo '<div class="p-ISBN">ISBN : '.$cart_itm["ISBN"].'</div>';
echo '<div class="p-quantity">Quantity : '.$cart_itm["quantity"].'</div>';
echo '<div class="p-Price">Price :'.$currency.$cart_itm["Price"].'</div>';
echo '</li>';
$subtotal = ($cart_itm["Price"]*$cart_itm["quantity"]);
$total = ($total + $subtotal);
}
echo '</ol>';
echo '<span class="check-out-txt"><strong>Total : '.$currency.$total.'</strong> <a href="view_cart.php">Go to checkout</a></span>';
echo '<span class="empty-cart"><a href="cart_update.php?emptycart=1&return_url='.$current_url.'">Empty Cart</a></span>';
}else{
echo 'Your Cart is empty';
}
?>
</div>
</div>
</body>
</html>
Any idea as to why im getting that error?
Thanks!
