add class to element if user is not logged in
Please help . I need to add class to this button if user is not logged in
?php echo apply_filters( 'my_order_html', 'button type=submit class=ADD-CLASS-HERE cfw-primary-btn cfw-next-tab validate name=my_list_html id=place_order formnovalidate=formnovalidate value=' . esc_attr( $order_button_text ) . ' data-value=' . esc_attr( $order_button_text ) . 'span class=cfw-button-text' . esc_html( $order_button_text ) . '/span/button' ); // @codingStandardsIgnoreLine ?