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Problem using sessions - how to allow multiple 'purchases'?

spiderman_2k7

By spiderman_2k7
in PHP Coding Help

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spiderman_2k7 Newbie

spiderman_2k7

Posted
Posted

Hi. I am creating a simple PHP ordering system where a user can purchase items and then 'buy' them. I was having problems totalling the prices up of all the items a user 'purchased' until I came accross using sessions. I adopted this in to my PHP and once a submit button is pressed a new page opens displaying the price of the item without VAT and a price with VAT, which is what my aim is.

 

However, the problem is that I need my system to allow a user to purchase one OR more items. At the moment I can only get a user to purchase one item with sessions, is it possible to have a user purchase more then one item?

 

Here are my codes:

 

Page listing items for 'sale' -

 

<html> <head> <title>Football Shirts 'R' Us</title> </head> 
<body> 
<body bgcolor="#339900"> 
<p> <font size=16, color=white><b><u><center>Football Shirts 'R' Us!</center></u></b></p> 
<form action="/showvariables3.php" method="post">   
<br> 
<table width=45%, border=1, align=center> 
<tr> 
   <th> ID </th>     <th> Football Shirt </th> 
    <th> Team  </th>    <th> Price  </th>    <th> Select  </th> 
</tr> 
<tr><tr> 
<?php 
    if(!($lines = file('read_shirts.txt'))) 
    {echo 'ERROR: Unable to open file! </body></html>'; exit;} 
    foreach($lines as $theline) { 
list($id, $shirt, $club, $price) = split('\|',$theline); 
?> 
    <tr> 
            <td><? echo $id; ?></td>  <td><? echo $shirt ?></td> 
    <td><? echo $club ?> </td>  <td>£<? echo $price ?> </td>    <td> 
<form method="post" action="addtocart.php" > 
  <input name="id" type="hidden" value="<?php echo $id; ?>"> 
        <input name="price" type="hidden" value="<?php echo $price; ?>"> 
            <input type="submit" value="Submit"> 
</form> 
    </td>     
    </tr> 
<?php 
} 
?> 
</table> 
</body> </html>

 

Cart -

 

<? 
session_start(); // start the session 

$id = $_POST["id"]; // get the id 
$price = $_POST["price"]; // get the price 

if ( !isset( $_SESSION["cart"] ) ) {  // check if the array is there 
$_SESSION["cart"] = array(); // if not create one 
} 

$_SESSION["cart"][$id] = $price; // add the data to the array 
header("location:showvariables3.php");  // redirect to the cart page 
?>

 

Order summary page -

 

<html> <head> <title>Football Shirts 'R' Us!</title> </head> 
<body bgcolor="green">
<p> <font size=12, color=white><b><u><center>Your order with Football Shirts 'R' Us</center></u></b></p></font>
<p><font size=6, color=white>Hello, your order is as follows:</p></font>
<table> <tr> </tr>
<?php 
session_start(); 
$session = $_SESSION['cart']; 
$count = count($session); 
if($count==0){ 
echo "No Items In Cart"; 
} 
else { 
?> 
<html> <head> <title>Football Shirts 'R' Us!</title> </head> 
<body bgcolor="green"> 
<p> <font size=12, color=white><b><u><center>Your order with Football Shirts 'R' Us</center></u></b></p></font> 
<p><font size=6, color=white>Hello, your order is as follows:</p></font> 
<table> 
  <tr> </tr> 
<?php 
foreach ($_SESSION['cart'] as $id => $price ) { 
$sub[]=$price; 
echo $id; 
echo " - "; 
echo $price; 
echo "<br>"; 
} 
?> 
<br> 
<tr> <td aliign='left'> Total Excluding VAT: </td> 
<td nowrap> 
£<?php 
$subtotal = array_sum($sub); 
echo number_format($subtotal, 2, '.', ','); 

$total = $subtotal /100 * 17.5 ;   
$total = $total + $subtotal; 
$total = round($total, 2); 

?> </td> 
</tr> 
<br> 
<tr> <td align='left'> Total Including VAT: </td> 
<td nowrap>£<? echo number_format($total, 2, '.', ','); ?></td> 
</tr> 
</table> 
</body> </html> 
<? 
} 
?>
</table> 
</body> </html>

 

Thanks

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