아래의 소스 중에서 

이 부분의 소스는 왜 있는 거죠?

<?php

$i = 0;

foreach( $menu_datas as $row ){

?>

<li class="gnb_al_li">

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

<?php

$k = 0;

foreach( (array) $row['sub'] as $row2 ){

if($k == 0)

echo '<ul>'.PHP_EOL;

?>

<li><a href="<?php echo $row2['me_link']; ?>" target="_<?php echo $row2['me_target']; ?>"><i class="fa fa-caret-right" aria-hidden="true"></i> <?php echo $row2['me_name'] ?></a></li>

<?php

$k++;

} //end foreach $row2

if($k > 0)

echo '</ul>'.PHP_EOL;

?>

</li>

<?php

$i++;

} //end foreach $row

if ($i == 0) { ?>

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

<?php } ?>

==============================================================

<nav id="gnb">

<h2>메인메뉴</h2>

<div class="gnb_wrap">

<ul id="gnb_1dul">

<li class="gnb_1dli gnb_mnal"><button type="button" class="gnb_menu_btn"><i class="fa fa-bars" aria-hidden="true"></i><span class="sound_only">전체메뉴열기</span></button></li>

<?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

$menu_datas = array();

for ($i=0; $row=sql_fetch_array($result); $i++) {

$menu_datas[$i] = $row;

$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++) {

$menu_datas[$i]['sub'][$k] = $row2;

}

}

$i = 0;

foreach( $menu_datas as $row ){

if( empty($row) ) continue;

?>

<li class="gnb_1dli" style="z-index:<?php echo $gnb_zindex--; ?>">

<a href="<?php echo $row['me_link']; ?>" target="_<?php echo $row['me_target']; ?>" class="gnb_1da"><?php echo $row['me_name'] ?></a>

<?php

$k = 0;

foreach( (array) $row['sub'] as $row2 ){

if( empty($row2) ) continue;

if($k == 0)

echo '<span class="bg">하위분류</span><ul class="gnb_2dul">'.PHP_EOL;

?>

<li class="gnb_2dli"><a href="<?php echo $row2['me_link']; ?>" target="_<?php echo $row2['me_target']; ?>" class="gnb_2da"><?php echo $row2['me_name'] ?></a></li>

<?php

$k++;

} //end foreach $row2

if($k > 0)

echo '</ul>'.PHP_EOL;

?>

</li>

<?php

$i++;

} //end foreach $row

if ($i == 0) { ?>

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

<?php } ?>

</ul>

<div id="gnb_all">

<h2>전체메뉴</h2>

<ul class="gnb_al_ul">

<?php

$i = 0;

foreach( $menu_datas as $row ){

?>

<li class="gnb_al_li">

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

<?php

$k = 0;

foreach( (array) $row['sub'] as $row2 ){

if($k == 0)

echo '<ul>'.PHP_EOL;

?>

<li><a href="<?php echo $row2['me_link']; ?>" target="_<?php echo $row2['me_target']; ?>"><i class="fa fa-caret-right" aria-hidden="true"></i> <?php echo $row2['me_name'] ?></a></li>

<?php

$k++;

} //end foreach $row2

if($k > 0)

echo '</ul>'.PHP_EOL;

?>

</li>

<?php

$i++;

} //end foreach $row

if ($i == 0) { ?>

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

<?php } ?>

</ul>

<button type="button" class="gnb_close_btn"><i class="fa fa-times" aria-hidden="true"></i></button>

</div>

</div>

</nav>