//删除分类public function del(){$cid = I(‘get.cid‘);$cate = M(‘category‘)->field(‘cid,pid‘)->select();$cate = $this->son_cate($cate,$cid);$cate[] = $cid;//$cate为一个数组$where[‘cid‘] = array(‘in‘,$cate);//cid在这个数组中，M(‘category‘)->where($where)->delete();//$where作为条件传进来$this->success(‘分类删除成功‘);}