smarty怎样双循环

$sql="SELECT * FROM `m_user` order by `songcount`  DESC  limit 10";
 $query=$db->query($sql);
 while($row_user1=$db->fetch_array($query)){
  $sm_user1[]=array("niname"=>$row_user1[niname],"name"=>$row_user1[name],"id"=>$row_user1[id],"photourl"=>$row_user1[photourl],"songcount"=>$row_user1[songcount],"hit"=>$row_user1[hit] );
     
     $sql="SELECT * FROM `m_usersong` where `uid` = '$row_user1[id]' limit 6";
      $query=$db->query($sql);
      $row_usersong=$db->fetch_array($query);
     while($row_usersong=$db->fetch_array($query)){


   $sm_usersong[]=array("oldname"=>$row_usersong[oldname],"id"=>$row_usersong[id],"uid"=>$row_song[uid],"hit"=>$row_usersong[hit]);
   }

 }


我想循环显示用户基本信息    然后显示该用户热门的歌

将两他们定义到一个数组中传给assign，循环这个数组