WooCommerce自動完成所有付款之訂單

            add_filter( 'woocommerce_payment_complete_order_status', 'silkwave_autocomplete_paid_orders', 10, 2 );

            function silkwave_autocomplete_paid_orders( $order_status, $order_id ) {
                $order = new WC_Order( $order_id );
                if ( $order_status == 'processing' && ( $order->get_status() == 'on-hold' || $order->get_status() == 'pending' || $order->get_status() == 'failed' ) ) {
                    return 'completed';
                }

                return $order_status;
            }