ripro主题美化，导航菜单统计文章数量

//导航菜单增加文章统计
function wt_get_category_count($cat_ID) {
    $category = get_category($cat_ID);
    return $category->count;
}
function lanmitu_nav_items_num( $items,$args ) {
    if(isset($args->theme_location) && $args->theme_location == 'menu-1') {
        foreach ( $items as $key=>$item ) {
            if($item->object == 'category') {
                //$cat = get_category_by_slug($slug);
                $catID = isset($item->object_id) ? $item->object_id : false;
                if($catID && $item->post_parent!=0) {
                    $a=wt_get_category_count($catID);
                    $items[$key]->title.= '<span class="num">'.$a.'</span>';
                }
            }
        }
    }
    return $items;
}
add_filter( 'wp_nav_menu_objects', 'lanmitu_nav_items_num',10,2 );