打开/include/taglib/arclist.lib.php，代码约位于295-296行,查找以下两行代码：
if($CrossID=='') $orwheres[] = ' arc.typeid IN ('.GetSonIds($typeid).')';
else $orwheres[] = ' arc.typeid IN ('.GetSonIds($typeid).','.$CrossID.')';
将其替换成以下代码：
$vicewheres = "";
$typeids = explode(",",GetSonIds($typeid));
$crossids = explode(",",$CrossID);
$typeidss = array_merge($typeids,$crossids);
$typeidss = array_unique($typeidss);
foreach($typeidss as $tid){
$liketypeid2 = ",".$tid.",";
$vicewheres.= " or CONCAT(',',arc.typeid2,',') like '%$liketypeid2%' ";
}
if($CrossID==''){
if($vicewheres!="")
$orwheres[] = ' (arc.typeid in ('.GetSonIds($typeid).') '.$vicewheres.') ';
else
$orwheres[] = ' arc.typeid in ('.GetSonIds($typeid).') ';
}else{
if($vicewheres!="")
$orwheres[] = ' (arc.typeid in ('.GetSonIds($typeid).','.$CrossID.') '.$vicewheres.') ';
else
$orwheres[] = ' arc.typeid in ('.GetSonIds($typeid).','.$CrossID.') ';
}
这种办法可以解决typeid="2"的情况下不显示副栏目的问题， 如果typeid=“2,3,8”，有多个栏目需要调用副栏目就不行了 怎么解决这个问题，找到262行， $orwheres[] = " arc.typeid IN ($typeid) "; 直接替换为：
$vicewheres = "";
foreach($typeid as $tid){
$liketypeid2 = ",".$tid.",";
$vicewheres.= " or CONCAT(',',arc.typeid2,',') like '%$liketypeid2%' ";
}
if($vicewheres!="")
$orwheres[] = " (arc.typeid in ($typeid) $vicewheres) ";
else
$orwheres[] = " arc.typeid in ($typeid) ";
问题产生的原因，看下arclist.lib.php原始代码：（ typeid为主栏目id， typeid2为副栏目id）
找到246行：
//指定了多个栏目时，不再获取子类的id if( preg_match('#,#', $typeid) ) //如果typeid字段匹配逗号， 就是说typeid调用多个栏目，例如：typeid=“2,3,8”
{
//指定了getall属性或主页模板例外
if($getall==1 || empty($refObj->Fields['typeid']))
{
$typeids = explode(',', $typeid);
foreach($typeids as $ttid) {
$typeidss[] = GetSonIds($ttid);
}
$typeidStr = join(',', $typeidss);
$typeidss = explode(',', $typeidStr);
$typeidssok = array_unique($typeidss);
$typeid = join(',', $typeidssok);
}
$orwheres[] = " arc.typeid IN ($typeid)"; //导致typeid='2,3,8'情况下不能调用副栏目问题产生的地方
}
else //如果typeid不匹配逗号，就是调用一个栏目 例如 typeid="2"
{
//处理交叉栏目
$CrossID = '';
if($ctag->GetAtt('cross')=='1')
{
$arr = $dsql->GetOne("SELECT `id`,`topid`,`cross`,`crossid`,`ispart`,`typename` FROM `dede_arctype` WHERE id='$typeid' ");
if( $arr['cross']==0 || ( $arr['cross']==2 && trim($arr['crossid']=='') ) )
{
$orwheres[] = ' arc.typeid IN ('.GetSonIds($typeid).')';
}
else
{
$selquery = '';
if($arr['cross']==1) {
$selquery = "SELECT id,topid FROM `dede_arctype` WHERE typename LIKE '{$arr['typename']}' AND id<>'{$typeid}' AND topid<>'{$typeid}' ";
}
else {
$arr['crossid'] = preg_replace('#[^0-9,]#', '', trim($arr['crossid']));
if($arr['crossid']!='') $selquery = "SELECT id,topid FROM `dede_arctype` WHERE id IN('{$arr['crossid']}') AND id<>'{$typeid}' AND topid<>'{$typeid}' ";
}
if($selquery!='')
{
$dsql->SetQuery($selquery);
$dsql->Execute();
while($arr = $dsql->GetArray())
{
$CrossID .= ($CrossID=='' ? $arr['id'] : ','.$arr['id']);
}
}
}
}
if($CrossID=='') $orwheres[] = ' arc.typeid IN ('.GetSonIds($typeid).')';
else $orwheres[] = ' arc.typeid IN ('.GetSonIds($typeid).','.$CrossID.')'; //导致typeid='2'情况下不能调用副栏目问题产生的地方
}
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