Code-Snippets-Functions/Execute a function on a child site/WooCommerce/change-order-status-based-on-shipping-method.txt

add_action( 'woocommerce_order_status_processing', 'shipping_method_update_order_status', 10, 2 );
function shipping_method_update_order_status( $order_id, $order ) {
    // Here, define the shipping methods instance IDs in the array
    $defined_instance_ids = array('25', '26', '27', '28');

    // Loop through order "shipping" items
    foreach ( $order->get_items('shipping') as $item ) {
        // Check for any matching shipping method instance ID
        if ( in_array( $item->get_instance_id(), $defined_instance_ids ) ) {
            // Update the order status
            $order->update_status('priority_dispatch'); 
            break; // Stop the loop
        }
    }
}