BOOTSTRAP 2차 메뉴 질문입니다

현재 

<ul class="nav navbar-nav">

<?php

$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++) {

$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);

$result2_cnt = mysql_num_rows($result2);

if ($result2_cnt == 0) { ?>

<li><a href="<?php echo $row['me_link']; ?>" target="_<?php echo $row['me_target']; ?>" ><?php echo $row['me_name'] ?></a></li>

<?php

} else { ?>

<li class="dropdown">

<a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-expanded="false"><?php echo $row['me_name'] ?></a>

<ul class="dropdown-menu" role="menu">

<?php

for ($k=0; $row2=sql_fetch_array($result2); $k++) { ?>

<li><a href="<?php echo $row2['me_link']; ?>" target="_<?php echo $row2['me_target']; ?>" ><?php echo $row2['me_name'] ?></a></li>

<?php

}

echo '</ul>'.PHP_EOL;

} ?>

</li>

<?php

}

if ($i == 0) {  ?>

<li id="gnb_empty">메뉴 준비 중입니다.<?php if ($is_admin) { ?> <br><a href="<?php echo G5_ADMIN_URL; ?>/menu_list.php">관리자모드 &gt; 환경설정 &gt; 메뉴설정</a>에서 설정하실 수 있습니다.<?php } ?></li>

<?php } ?>

</ul>

요렇게해놨는데 2차 메뉴가 나오질않네요 ㅠ.ㅠ  

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