category & sub category order issues in wordpress

Try to use orderby name and order asc and desc to achieve category order

      $categories = get_categories( array(
          'orderby' => 'name',
          'order'   => 'ASC'
      ) );

      foreach( $categories as $category ) {


          echo $category_names = $category[1]->name;

      } 

      //  echo wp_json_encode($category_names);