I have the following code which is not working. I have a problem with my session based shopping cart. When i add stuff, it doesn't show up, and i don't know why.
main.php file, first few lines, they receive the infos to add stuff to the cart:
//Start the session
session_start();
//Create 'cart' if it doesn't already exist
if (!isset($_SESSION['SHOPPING_CART'])){ $_SESSION['SHOPPING_CART'] = array(); }
//Add an item only if we have the required pices of information: name, qty
if (isset($_GET['name']) && isset($_GET['qty']) && isset($_GET['add'])){
//Adding an Item
//Store it in a Array
$ITEM = array(
//Item name
'name' => $_GET['name'],
//Item Price
//'price' => $_GET['price'],
//Qty wanted of item
'qty' => $_GET['qty']
);
//Add this item to the shopping cart
$_SESSION['SHOPPING_CART'][] = $ITEM;
//Clear the URL variables
header('Location: ' . $_SERVER['PHP_SELF']);
}
//Allowing the modification of individual items no longer keeps this a simple shopping cart.
//We only support emptying and removing
else if (isset($_GET['remove'])){
//Remove the item from the cart
unset($_SESSION['SHOPPING_CART'][$_GET['remove']]);
//Re-organize the cart
//array_unshift ($_SESSION['SHOPPING_CART'], array_shift ($_SESSION['SHOPPING_CART']));
//Clear the URL variables
header('Location: ' . $_SERVER['PHP_SELF'].'#cart');
}
else if (isset($_GET['empty'])){
//Clear Cart by destroying all the data in the session
session_destroy();
//Clear the URL variables
header('Location: ' . $_SERVER['PHP_SELF'].'#cart');
}
else if (isset($_POST['update'])) {
//Updates Qty for all items
foreach ($_POST['items_qty'] as $itemID => $qty) {
//If the Qty is "0" remove it from the cart
if ($qty == 0) {
//Remove it from the cart
unset($_SESSION['SHOPPING_CART'][$itemID]);
}
else if($qty >= 1) {
//Update to the new Qty
$_SESSION['SHOPPING_CART'][$itemID]['qty'] = $qty;
}
}
//Clear the POST variables
header('Location: ' . $_SERVER['PHP_SELF'].'#cart');
}
?>
This is the div that SHOULD show the content of the cart, but doesn't, it's empty, not sure why. It's also inside the main.php
<div id="cart">
<form action="" method="post" name="shoppingcart" style="font-size:12px;">
<?php
//We want to include the shopping cart in the email
ob_start();
?>
<table width="500" border="1" id="searchTbl">
<tr>
<th scope="col">Edit</th>
<th scope="col">Description</th>
<th scope="col">Quantity</th>
</tr>
<?php
//Print all the items in the shopping cart
foreach ($_SESSION['SHOPPING_CART'] as $itemNumber => $item) {
?>
<tr id="item<?php echo $itemNumber; ?>">
<td><a href="?remove=<?php echo $itemNumber; ?>">Löschen</a></td>
<td><?php echo $item['name']; ?></td>
<!-- <td><?php echo $item['price']; ?></td> -->
<td><input name="items_qty[<?php echo $itemNumber; ?>]" type="text" id="item<?php echo $itemNumber; ?>_qty" value="<?php echo $item['qty']; ?>" size="2" maxlength="3" /></td>
<!-- <td><?php echo $item['qty'] * $item['price']; ?></td> -->
</tr>
<?php
}
?>
</table>
<?php $_SESSION['SHOPPING_CART_HTML'] = ob_get_flush(); ?>
<p>
<label>
<input type="submit" name="update" id="update" value="Update Cart" />
</label>
</p>
</form>
<p><a href="?empty">Empty Cart</a></p>
</div>
Link for adding items to the cart looks as follows, the $description gets through correctly from a MySQL variable, so that works.
<a rel='facebox' href='editqty.php?name={$description}'><img src='img/mail.png' width='25' ></a>
editqty.php is a popup where you can enter the amount you want and click send, which then refers to the main.php file, which should get the values by doing $_GET:
<?php
try {
$id = $_GET['name'];
}
catch(PDOException $e) {
echo 'ERROR: ' . $e->getMessage();
}
?>
<form method="post" action="index.php">
<fieldset>
<legend>Amount?</legend>
<table>
<tr>
<td>Amount:</td>
<td><input type="text" name="qty" required value="" autocomplete="off"></td>
<td><input type="hidden" name="name" value="<?php echo $id; ?>" autocomplete="off"></td>
</tr>
<tr>
<td></td>
<td><input type="submit" name="add" value="Add"></td>
</tr>
</table>
</fieldset>
</form>
Now i know that the value for the name goes from the main.php per GET to the editqty.php, and there it is used in a hidden value and the qty value is added and these two then get sent back to the main.php, which works, i have tested that using tamper data, so i can see the two variables filled with infos getting through to main.php. Now the first script part in main.php actually seems to do something, it refers to the correct #cart and reloads the page, but there's no content then in that table that get's shown...
What i am doing wrong?
As always, thanks in advance, every hint is really appreciated!
Edit: I just found that if i change the URL to:
<a href='main.php?name={$description}&qty=5&add=foobar'><img src='img/mail.png' width='25' ></a>
It works like a charm, so i guess it has something to do that i am invoking another php script that does the add quantity for me, as i don't have an input for the quantity in the main.php i want to do that with an external php... Do i have to keep the session alive or something?
