session

[wangchu]

I dont know where the bug is even after dwelling on the code for hours.
Problems it gives:
1. when i click the link add, remove and delete, simply display the last echo statement You cart is empty.

<?php

include 'includes/connect.php';
session_start();
mysql_connect('localhost','root','')or die('Could not connect to server');
$db = mysql_select_db('book_sc') or die('Could not connect database');

echo "<h1> Shopping cart </h1><br />";

        if (isset($_GET['id']))
             $id = $_GET['id'];
         else
            $id='1';

          if (isset($_GET['action']))
             $action=$_GET['action'];
          else
             $action="empty";



      switch($action)
              {
                case 'add':
                            if (isset($_SESSION['cart'][$id]))
                                $_SESSION['cart'][$id]++;
                            else
                                $_SESSION['cart'][$id]=1;
                            break;
                case 'remove':
                            if (isset($_SESSION['cart'][$id]))
                            {
                                   $_SESSION['cart'][$id]--;
                                   if ($_SESSION['cart'][$id]==0)
                                   unset($_SESSION['cart'][$id]);
                             }
                             break;
                case 'empty':
                             unset($_SESSION['cart']);
                             break;
              }

if(isset($SESSION['cart']))
{
echo "<table border=1 cellpadding=0 cellspacing=0 width='500'>";
$totalcost = '0';
foreach( $SESSION['cart'] as $id => $x)
{
$result = mysql_query("SELECT title,price FROM books WHERE id=$id")or die(mysql_error());
$myrow = mysql_fetch_array($result);
$title =$myrow['title'];
$price =$myrow['price'];
$linecost = $price * $x;
$totalcost = $totalcost + $linecost;
echo "<tr>";
echo "<td align=left>$title</td>";
echo "<td align=right>$x<a href='displaycart.php?id='.$id.'&action=remove'>Reduce</a>
<a href='displaycart.php?id='.$id.'&action=add'>Add</a>
<a href='displaycart.php?id='.$id.'&action=empty'>Empty</a></td>";
echo "<td align=right>= Rs. $linecost</td>";
echo "</tr>";

 }

echo "<tr>";
echo "<td align=right> <br>Total</td>";
echo "<td align=right><b> Rs. $totalcost</b></td>";
echo "</tr>";

echo "</table>";

}
else
echo "The cart is empty";

?>

[Emma]

Maybe it has something to do with $_SESSION not being set anywhere.

[Bonesnap]

Is $_SESSION['cart'] actually a multi-dimensional array? Look at what you're setting and look at what you're checking.

[vivek151189]

please check with the $_SESSION I think your session has not being set any where if set then refer the statement given by Bonesnap