何位看下这个循环嵌套数组有误吗

哪位看下这个循环嵌套数组有误吗？

function get_number_list($cat_id)
{
 $sql=$GLOBALS['db']->query("select * from ".$GLOBALS['db']->table('dept_category')." order by sort");
 while($row=$GLOBALS['db']->fetch_array($sql)){
   if($row){
   $result=$GLOBALS['db']->query("select * from ".$GLOBALS['db']->table('number')." where dept=".$row['cat_id']." and cat_id='$cat_id' order by sort");
	 while($rows=$GLOBALS['db']->fetch_array($result)){
	    if($rows){
	   $number_show[] = array(
	          'id' => $rows['id'],
			  'title' => $rows['title'],
			  'user' => $rows['username']
	   );
	  }
	 }
        $cat_name[]=array(
	      'sort' => $row['sort'],
	      'cat_name' => $row['cat_name'],
		  'topid' => $number_show
	 );
     }
   }
   return $cat_name;
 }

这个是源代码，这是截图：
这个是静态页面代码：

                             {foreach from=$dept_list name=dept_list item=dept}



							{foreach from=$dept.topid item=number}




							    {/foreach}
							  {/foreach}
							  
                                
 {$dept.cat_name}
                                
                              
                                
{$number.user}
                                
{$number.title}
                              
                            

------解决方案--------------------
因为你number_show没有清空，第一个记录获取到的一直在，所以后面就都有了。
------解决方案--------------------

function get_number_list($cat_id)
{
 $sql=$GLOBALS['db']->query("select * from ".$GLOBALS['db']->table('dept_category')." order by sort");
 while($row=$GLOBALS['db']->fetch_array($sql)){
   if($row){
   $result=$GLOBALS['db']->query("select * from ".$GLOBALS['db']->table('number')." where dept=".$row['cat_id']." and cat_id='$cat_id' order by sort");
     while($rows=$GLOBALS['db']->fetch_array($result)){
        if($rows){
       $number_show[] = array(
              'id' => $rows['id'],
              'title' => $rows['title'],
              'user' => $rows['username']
       );
      }
     }
        $cat_name[]=array(
          'sort' => $row['sort'],
          'cat_name' => $row['cat_name'],
          'topid' => $number_show
     );
    unset($number_show);
     }
   }
   return $cat_name;
   unset($cat_name);
 }

利用unset对数组进行清空。