列出所有数据表，和各表的字段

        $data = M()->query("Select Name From SysObjects Where XType='U' order By Name");

        foreach ($data as $k => $v) {

            echo "<br>".$v['Name'];

            $data1 = M()->query("Select Name From SysColumns Where id=Object_Id('".$v['Name']."')");

            var_dump($data1);

        }