whats wrong ?? functions&vars

I know its something that I'm doing wrong, the theory of operation is 2 add the data to a database and a flat file. The db add works the flat file add errors with "Undefined variable:". what's wrong ? function create_order(&$order) { global $SESSION; /* build the custinfo string */ /* I need to pull this in the below function*/ $custinfo = "Customer : $order->customer\n" . "Contact : $order->contact\n" . "Address : $order->address\n" . "Credit Card: " . chop_ccnum($order->creditcard) . " expiry $order->expiry\n"; /* save order information first */ $qid = db_query(" INSERT INTO orders ( username, o_timestamp, status, custinfo, comments, amount ) VALUES ( '{$SESSION["user"]["username"]}' ,now() ,1 ,'$custinfo' ,'$order->comments' ,'{$SESSION["cart"]->total}' )"); $orderid = db_insert_id(); /* now add the shopping cart items into the order_items table */ $qid = get_cart_items(); while ($item = db_fetch_object($qid)) { db_query(" INSERT INTO order_items ( order_id, product_id, price, qty ) VALUES ( '$orderid' ,'$item->id' ,'$item->price' ,'{$SESSION["cart"]->items["$item->id"]}' )"); } return $orderid; } " IN RED IS WHERE THE PROBLEM IS " function authorize_payment(&$orderid, &$status, &$status_details) { // $filewrite will write order data to a flat file $DATE = date("z"); $filename ="/reports/$DATE"; $fp = fopen( $filename,"a"); fwrite( $fp, "------------------------ \n"); fwrite( $fp," ORDER ID = " . "$orderid \n"); fwrite( $fp," CUSTOMER = " . "$order->custinfo \n"); fwrite( $fp," CONTACT = " . "$order->contact \n"); fwrite( $fp," SHIPPING ADDRESS = " . "$order->address \n"); fwrite( $fp," CREDIT CARD NUMBER = " . "$order->creditcard \n"); fwrite( $fp, "------------------------ \n"); fclose( $fp ); $status = 1; $status_details = "Order completed successfully"; return true; } thks dave