<ul id="gnb">
  $sql = " select *
     from {$g5['menu_table']}
     where me_use = '1'
       and length(me_code) = '2'
     order by me_order, me_id ";
  $result = sql_query($sql, false);
  $gnb_zindex = 999; // gnb_1dli z-index 값 설정용
  for ($i=0; $row=sql_fetch_array($result); $i++) {
  ?>
  <li class="gnb_1dli<?php echo $i; ?>"> 
   <a href="<?php echo $row['me_link']; ?>" target="_<?php echo $row['me_target']; ?>"><?php echo $row['me_name'] ?></a>
   <?php
   $sql2 = " select *
      from {$g5['menu_table']}
      where me_use = '1'
        and length(me_code) = '4'
        and substring(me_code, 1, 2) = '{$row['me_code']}'
      order by me_order, me_id ";
   $result2 = sql_query($sql2);
   for ($k=0; $row2=sql_fetch_array($result2); $k++) {
    if($k == 0)
     echo '<ul class="gnb_2dul">'.PHP_EOL;
   ?>
    <li class="gnb_2dli<?php echo $k; ?>"><a href="<?php echo $row2['me_link']; ?>" target="_<?php echo $row2['me_target']; ?>"><?php echo $row2['me_name'] ?></a></li>
   <?php
   }
   if($k > 0)
    echo '</ul>'.PHP_EOL;
   ?>
  </li>
  <?php } ?>
 </ul>
​