帝国cms怎么调用当前栏目的顶级栏目名称_帝国cms顶级栏目名称获取方法

<?php
$cr = $empire->fetch1("SELECT * FROM {$dbtbpre}enewsclass WHERE classid='$GLOBALS[navclassid]'");
$topbclassid = $cr['bclassid'];
if($topbclassid == 0) {
    $topclassid = $GLOBALS['navclassid'];
} else {
    while($topbclassid != 0) {
        $cr2 = $empire->fetch1("SELECT * FROM {$dbtbpre}enewsclass WHERE classid='$topbclassid'");
        if($cr2['bclassid'] == 0) {
            $topclassid = $topbclassid;
            break;
        } else {
            $topbclassid = $cr2['bclassid'];
        }
    }
}
$topclassr = $empire->fetch1("SELECT classname FROM {$dbtbpre}enewsclass WHERE classid='$topclassid'");
echo $topclassr['classname'];
?>

<?php
$classid = $GLOBALS['navclassid'];
while($classid != 0) {
    $classr = $empire->fetch1("SELECT classid, bclassid, classname FROM {$dbtbpre}enewsclass WHERE classid='$classid'");
    if($classr['bclassid'] == 0) {
        echo $classr['classname']; // 输出顶级栏目名称
        break;
    }
    $classid = $classr['bclassid'];
}
?>

function getTopClassname($classid) {
    global $empire, $dbtbpre;
    while($classid != 0) {
        $r = $empire->fetch1("SELECT bclassid, classname FROM {$dbtbpre}enewsclass WHERE classid='$classid'");
        if($r['bclassid'] == 0) {
            return $r['classname'];
        }
        $classid = $r['bclassid'];
    }
    return '';
}

<?php echo getTopClassname($GLOBALS['navclassid']); ?>