Warning: Cannot use a scalar value as an array in

[blazer19]

Hi i am currently getting these errors when trying to set up an ecommerce site

 

 

Warning: Cannot use a scalar value as an array in /homes/06020478/www/add_item.php on line 8

 

Warning: Cannot modify header information - headers already sent by (output started at /homes/06020478/www/add_item.php: in /homes/06020478/www/add_item.php on line 9

 

 

Here is my code

 

<?php
$prod_id = $_GET['id'];

if($_SESSION['CART'][$prod_id]) {
header ('location:purchasing.php?error=1'); 
}else{	
$_SESSION['CART'][$prod_id] = true;
header ('location:basket.php'); 
}
?>

 

 

I would be so greatful to any ideas as to what the problem is

 

Thanks

[blazer19]

more info

 

here is the url http://sots.brookes.ac.uk/~06020478/purchasing.php

 

the problem happens when i try to add a product to the basket