shopnc 店铺二级分类添加商品

$class_2 = $goods_class[$gc_id]['gc_parent_id'];
            $class_1 = $goods_class[$class_2]['gc_parent_id'];
                        if(!isset($class_1)||$class_1==0){                        
                                if(!isset($class_2)||$class_2==0){        
                                        $where['class_1'] = $gc_id;
                                }else{                                                        
                                        $where['class_1'] = $class_2;
                                        $where['class_2'] = $gc_id;        
                                }
                        }else{
                                $where['class_1'] = $class_1;
                                $where['class_2'] = $class_2;
                                $where['class_3'] = $gc_id;
                        }
            $bind_info = $model_bind_class->getStoreBindClassInfo($where);
            if (empty($bind_info))
            {                
                showDialog(L('store_goods_index_again_choose_category2'));

            }
        }