the below code does not delete session vars on 4.1.2 but works on 4.3.3. How do I fix this issue?
function closeSale()
{
session_start();
$temp = $_SESSION['current_sale_customer_id'];
unset( $_SESSION['current_sale_customer_id'], $temp );
$temp1 = $_SESSION['items_in_sale'];
unset( $_SESSION['items_in_sale'], $temp1 );
$temp2 = $_SESSION['current_item_search'];
unset( $_SESSION['current_item_search'], $temp2 );
$temp3 = $_SESSION['current_customer_search'];
unset( $_SESSION['current_customer_search'], $temp3 );
}