dedecms多级栏目调用

{dede:channelartlist typeid="0" row="10" currentstyle="active"}
    <li><a href="{dede:field name='typeurl'/}">{dede:field name='typename'/}</a>
        {dede:channel type="son" noself="yes"}
            <ul>
                <li><a href="{dede:field name='typeurl'/}">{dede:field name='typename'/}</a></li>
            </ul>
        {/dede:channel}
    </li>
{/dede:channelartlist}

function getSubCategories($typeid) {
    $subCategories = array();
    $sql = "SELECT id, typename FROM `dede_arctype` WHERE reid = $typeid";
    $result = mysql_query($sql);
    while ($row = mysql_fetch_assoc($result)) {
        $subCategories[] = $row;
        if ($row['id'] != $typeid) { // 防止死循环
            $subCategories = array_merge($subCategories, getSubCategories($row['id']));
        }
    }
    return $subCategories;
}