1、打开修改admin/order.php文件，找到如下代码：

$sql = "SELECT o.order_id, o.order_sn, o.add_time, o.order_status, o.shipping_status, o.order_amount, o.money_paid," .

"o.pay_status, o.consignee, o.address, o.email, o.tel, o.extension_code, o.extension_id, " .

"(" . order_amount_field('o.') . ") AS total_fee, " .

NULLer_name, '" .$GLOBALS['_LANG']['anonymous']. "') AS buyer ".

" FROM " . $GLOBALS['ecs']->table('order_info') . " AS o " .

" LEFT JOIN " .$GLOBALS['ecs']->table('users'). " AS u ON u.user_id=o.user_id ". $where .

" ORDER BY $filter[sort_by] $filter[sort_order] ".

" LIMIT " . ($filter['page'] - 1) * $filter['page_size'] . ",$filter[page_size]";

将以上这段代码修改为如下的代码：

$sql = "SELECT o.order_id, o.order_sn, o.add_time, o.order_status, o.shipping_status, o.order_amount, o.money_paid, ur.rank_name," .

"o.pay_status, o.consignee, o.address, o.email, o.tel, o.extension_code, o.extension_id, " .

"(" . order_amount_field('o.') . ") AS total_fee, " .

"IFNULL(u.user_name, '" .$GLOBALS['_LANG']['anonymous']. "') AS buyer ".

" FROM " . $GLOBALS['ecs']->table('order_info') . " AS o " .

" LEFT JOIN " .$GLOBALS['ecs']->table('users'). " AS u ON u.user_id=o.user_id LEFT JOIN ". $GLOBALS['ecs']->table('user_rank'). " AS ur ON u.user_rank = ur.rank_id ". $where .

" ORDER BY $filter[sort_by] $filter[sort_order] ".

" LIMIT " . ($filter['page'] - 1) * $filter['page_size'] . ",$filter[page_size]";

2、打开修改admin/templates/order_list.htm文件，找到如下代码：

{$order.buyer|escape}

在以上这段代码的后面添加以下代码：

/{ if $order.rank_name}{$order.rank_name|escape}{else}非特殊等级{/if}

按照我们以上提供教程步骤修改后即可实现ECSHOP后台订单列表显示会员等级功能