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当前 文章 多个分类 获取 多个父级分类并输出

$category = get_the_category();
foreach($category as $categories) {
        $category_name = get_category($categories)->name;
        $cat_parent_id = $categories->category_parent;
        if (!empty($cat_parent_id != 1)) { echo  get_category($cat_parent_id)->name.',';}
}