getRow("SELECT * FROM pre_order WHERE trade_no='{$trade_no}' limit 1");
if(!$row)showerror('订单号不存在');
if($row['status']!=1)showerror('订单未完成支付');
if(!isset($_SESSION['paypage_trade_no']) || $_SESSION['paypage_trade_no']!=$trade_no)showerror('订单校验失败');
$userrow=$DB->getRow("select codename,username from pre_user where uid='{$row['uid']}' limit 1");
$codename = !empty($userrow['codename'])?$userrow['codename']:$userrow['username'];
?>
支付成功页面