@Sandun为什么不创建自己的小部件？

<?php
class Category_List_Custom extends WP_Widget {

/**
 * Sets up the widgets name etc
 */
public function __construct() {
    $widget_ops = array( 
        \'classname\' => \'category_list_custom\',
        \'description\' => \'Category list custom\',
    );
    parent::__construct( \'category_list_custom\', \'Category List Custom\', $widget_ops );
}

/**
 * Outputs the content of the widget
 *
 * @param array $args
 * @param array $instance
 */
public function widget( $args, $instance ) {
    $cats = get_categories();
    $ordered_cats = array();
    foreach($cats as $cat){
      $ordered_cats[$cat->category_count] = $cat;
    }
    ksort($ordered_cats);
    $return = \'<ul>\';
    foreach($ordered_cats as $cat){
      $return .= \'<li>\' . $cat->name . \'</li>\';

    }
    $return .= \'</ul>\';

    return $return;
}

}
add_action( \'widgets_init\', function(){
    register_widget( \'Category_List_Custom\' );
});?>

如果有帮助，请告诉我。