dedecms三级栏目调用

<?php
require_once(dirname(__FILE__)."/include/common.inc.php");
$dsql = new DedeSql(false);
// 获取顶级栏目
$topCats = $dsql->GetOne("SELECT id, name FROM dede_arctype WHERE reid=0 ORDER BY id ASC");
// 获取二级栏目
$secondCats = $dsql->GetAll("SELECT id, name, reid FROM dede_arctype WHERE reid={$topCats['id']} ORDER BY id ASC");
// 获取三级栏目
$thirdCats = array();
foreach ($secondCats as $secondCat) {
    $thirdCat = $dsql->GetAll("SELECT id, name, reid FROM dede_arctype WHERE reid={$secondCat['id']} ORDER BY id ASC");
    $thirdCats[] = array(
        'id' => $secondCat['id'],
        'name' => $secondCat['name'],
        'children' => $thirdCat
    );
}
?>
<ul>
    <li><?php echo $topCats['name']; ?></li>
    <?php foreach ($thirdCats as $cat): ?>
        <li><?php echo $cat['name']; ?>
            <ul>
                <?php foreach ($cat['children'] as $child): ?>
                    <li><?php echo $child['name']; ?></li>
                <?php endforeach; ?>
            </ul>
        </li>
    <?php endforeach; ?>
</ul>