How to stop order processing of same order once if order status is canceled in Magento?

Question

How to stop processing of the same order once the order is cancelled ? I\'m using paypal payment method,While placing the order from paypal if I cancel the order from the paypal

Answer 1

i think problem with you status is change but the state is not changing try below code..

              $order->setData('state', Mage_Sales_Model_Order::STATE_CANCELED); 
              $order->setStatus("canceled");
              $history = $order->addStatusHistoryComment('', false);
              $history->setIsCustomerNotified(false);
              $order->save();