Magento 1 Set Order Status

<?php $orderId = YOUR_ORDER_ID; $order = Mage::getModel('sales/order')->load($orderId); /** * change order status to 'Completed' */ $order->setState(Mage_Sales_Model_Order::STATE_COMPLETE, true)->save(); /** * change order status to 'Pending' */ $order->setState(Mage_Sales_Model_Order::STATE_NEW, true)->save(); /** * change order status to 'Pending Paypal' */ $order->setState(Mage_Sales_Model_Order::STATE_PENDING_PAYMENT, true)->save(); /** * change order status to 'Processing' */ $order->setState(Mage_Sales_Model_Order::STATE_PROCESSING, true)->save(); /** * change order status to 'Completed' */ $order->setState(Mage_Sales_Model_Order::STATE_COMPLETE, true)->save(); /** * change order status to 'Closed' */ $order->setState(Mage_Sales_Model_Order::STATE_CLOSED, true)->save(); /** * change order status to 'Canceled' */ $order->setState(Mage_Sales_Model_Order::STATE_CANCELED, true)->save(); /** * change order status to 'Holded' */ $order->setState(Mage_Sales_Model_Order::STATE_HOLDED, true)->save();