// Creates a new, blank APP_Order object.
appthemes_new_order();
 
// Retrieves the APP_Order object for a particular order id.
appthemes_get_order( $order_id );

// General Information
$order->get_id();
$order->get_description();
$order->get_author();
$order->get_ip_address(); // Returns IP address used to create the order
$order->get_currency();
$order->get_gateway();
$order->get_parent(); // Used for recurring orders
 
$order->is_recurring(); // Returns true if the order is recurring
$order->is_escrow(); // Returns true if the order is an escrow order
 
// Payment Gateway helpers
$order->get_return_url(); // URL to redirect after order is completed
$order->get_cancel_url(); // URL to redirect to change gateways
 
// Items
$order->get_item( $index = 0 ); // Returns the nth-item on the order
$order->get_items( $item_type = '' ); // Returns an array of items
$order->get_total();
$order->add_item( $item_type, $price, $post_id );
$order->refresh_total(); // Updates the total based on the database
 
// Event
$order->get_status(); // Returns the current state of the order. See Order States
$order->get_display_status();
 
// Gateways
$order->set_gateway( $gateway_id );
$order->clear_gateway();