Session variable

[RynMan]

Hey guys!

 

I'm trying to work through my shopping cart here and am having a problem.  Everytime I start up a new session (clear my cookies in firefox) and start testing, I get the following error....

 

Notice: Undefined variable: cart in C:\wamp\www\Adept\action_handle.inc.php  on line 16

 

It's pointing to my code here....

 

session_start();

$cart = $_SESSION['cart'];
$action = $_GET['action'];
$iquantity =  $_POST['iquantity'];

 

I'm guessing it's because the session has just started so naturally there will be nothing in the 'cart'.  How is this usually avoided?  Do we need to assign something to the cart to start with?  I'm trying not to do that, as my cart counts the number of instances a number (ID) appears....so I can't really have any values in there to start.

 

Thanks for any help!

[kenrbnsn]

Do something like this:

<?php
session_start();

$cart = (isset($_SESSION['cart']))?$_SESSION['cart']:'';
$action = $_GET['action'];
$iquantity =  $_POST['iquantity'];
?>

 

This will assign a 0 character string to $cart if there is no 'cart' session variable. If there is one, $cart will be assigned it's value.

 

Ken

[RynMan]

Do something like this:

<?php
session_start();

$cart = (isset($_SESSION['cart']))?$_SESSION['cart']:'';
$action = $_GET['action'];
$iquantity =  $_POST['iquantity'];
?>

 

This will assign a 0 character string to $cart if there is no 'cart' session variable. If there is one, $cart will be assigned it's value.

 

Ken

 

Awesome!  Thanks Ken!