Simple Shopping Cart with arrays

nisrin

Ive created a simple shopping cart using arrays and a cookie. The cookie is used to store the number of orders that have been made yet, extracting that value from the cookie and using it in a loop should display all the products quantity, price and total cost...BUT THAT DOESNT WORK, it just keeps getting overwritten. Heres the code:

<?php

$Itempointer=0;

//if the cookie exists
if(isset($COOKIE['NumberOrdered']))
{
$ItemPointer = $COOKIE['NumberOrdered']
echo "Cookie exists!";
}
else
{
setcookie('NumberOrdered','1',time()+2592000,'/','127.0.0.1');
echo "Cookie DOES NOT exist!";
}

$Itempointer++;

//shopping baskets for arrays of name, qty,
//price and cost. A variable for total cost.
$basket_tcost = "";
$basket_name[10] = "";;
$basket_quantity[10] = "";;
$basket_price[10] = "";;
$basket_cost[10] = "";;

//getting the items from the web page.
$basket_name[$Itempointer]=$POST["id"];
$basket_quantity[$Itempointer]=$POST["quantity"];
$basket_price[$Itempointer]=$POST["price"];
$basket_cost[$Itempointer]= $POST["quantity"] * $_POST["price"];
$basket_tcost+= $basket_cost[$Itempointer];

?>
<html>
<head>
<title>Order Page</title>
<link rel="stylesheet" type="text/css" href="../../../mystyle.css"/>
</head>
<body>
<h1>Order Page</h1>
<p>
<div align="center">
<table bordercolor="#C0C0C0" style="border-collapse: collapse; color:#CCCCFF ;font-family:'Palatino Linotype'" cellpadding="8" cellspacing="1" border="5" width="0" >
<tr>
<th>
  Product Name
</th>
<th>
  Quantity Ordered
</th>
<th>
  Product Price
</th>
<th>
  Total Cost
</th>
</tr>

<?php
for($i=1; $i<=$Itempointer; $i++)
{
echo "<tr>
<td>
$basket_name[$i]
</td>
<td>
$basket_quantity[$i]
</td>
<td>
$basket_price[$i]
</td>
<td>
$basket_cost[$i]
</td>
</tr>";
}
?>

<tr>
<th colspan = 3>
  Total Cost in Shopping Cart  
</th>
<td>
<?php echo $basket_tcost; ?>
</td>
</tr>
</table>
</div>
</p>
</body>
</html>

Please help me out here....I dont want to use php with mySql....i just want to use something simple...Thanks so much...

fandelem

hi,

instead of holding all of this in the cookie array, use the session array. what happens if your user has cookies disabled? now, one thing extra to consider with sessions is that if cookies are disabled on the client's browser, you now need to pass the session id in the browser because then php stores all of your session information on the server.

search for session management topics, re-write your code for using sessions instead of cookies, and i will help you from there--

edit: and make sure your form is method=post since you are collecting data from $_POST

nisrin

Thankyou so much for your response....as you suggested Im now using session arrays, please read my code, I have new errors...

<?php
session_start();
$sess_Itempointer = 0;
$sess_Itempointer = $SESSION["sess_Itempointer"]+1;
$SESSION["sess_Itempointer"]=$sess_Itempointer;

//shopping baskets for arrays of name, qty,
//price and cost. A variable for total cost.
$ses_basket_tcost;
$ses_basket_name[10];
$ses_basket_quantity[10];
$ses_basket_price[10];
$ses_basket_cost[10];

//getting the items from the web page.
$ses_basket_name[$sess_Itempointer]=$POST["id"];
$ses_basket_quantity[$sess_Itempointer]=$POST["quantity"];
$ses_basket_price[$sess_Itempointer]=$POST["price"];
$ses_basket_cost[$sess_Itempointer]= $POST["quantity"] * $_POST["price"];
$ses_basket_tcost+= $ses_basket_cost[$sess_Itempointer];

// register the new basket in the session
session_register("ses_basket_name");
session_register("ses_basket_quantity");
session_register("ses_basket_price");
session_register("ses_basket_cost");
session_register("ses_basket_tcost");

family:'Palatino Linotype'" cellpadding="8" cellspacing="1" border="5" width="0" >
<tr>
<th>
  Product Name
</th>
<th>
  Quantity Ordered
</th>
<th>
  Product Price
</th>
<th>
  Total Cost
</th>
</tr>
<?php
for($i=1; $i<=$sess_Itempointer; $i++)
{
echo"<tr>
<td>
$ses_basket_name[$i]
</td>
<td>
$ses_basket_quantity[$i]
</td>
<td>
$ses_basket_price[$i]
</td>
<td>
$ses_basket_cost[$i]
</td>
</tr>";
}
?>
<tr>
<th colspan = 3>
  Total Cost in Shopping Cart  
</th>
<td>
<?php echo $ses_basket_tcost; ?>
</td>
</tr>
</table>
</div>
</p>
</body>
</html>

The error I get is:
Warning: Unknown: Your script possibly relies on a session side-effect which existed until PHP 4.2.3. Please be advised that the session extension does not consider global variables as a source of data, unless register_globals is enabled. You can disable this functionality and this warning by setting session.bug_compat_42 or session.bug_compat_warn to off, respectively. in Unknown on line 0

Besides this the previous session arrays dont get printed......

Thank you so much Once Again....