php 无限分类（非递归）(3)

        $rs_son=mysql_query($sql); 
        while($row_son=mysql_fetch_array($rs_son)){ 
        echo "<option value=\"$row_son[flid]\">   $row_son[fltitle]</option>"; 
             
            $sql="select*from  fenlei where flpid=$row_son[flid]"; 
            $rs_son_one=mysql_query($sql); 
            while($row_son_one=mysql_fetch_array($rs_son_one)){ 
            echo "<option value=\"$row_son_one[flid]\">      $row_son_one[fltitle]</option>"; 
                
      }    
      } 
 
    } 
    ?> 
                          </select> 
                    </li> 
                    <li class="dark-row"> 
                        <span class="col_width">栏目名称<span class="red_font">*</span></span> 
                        <input type="text" class="text-box" name="title" maxlength="30" size="20" > 
                    </li> 
                    <li class="light-row"> 
                        <span class="col_width" style="margin-top:30px">栏目描述</span> 
                        <textarea class="text-box" name="des" cols="30" rows="5"></textarea>