帝国cms按tag调用相关内容，数量不够调用最新文章的代码。
1、根据tag调用相关的文章10条，不够调用最新文章
代码如下
function user_newslist($classid,$id,$num=10){
global $empire,$dbtbpre,$class_r;
$tbname=$class_r[$classid]['tbname'];
$tr=$empire->fetch1("select tagid from {$dbtbpre}enewstagsdata where id=".$id." and classid=".$classid."");
if($tr){
$sql="select * from {$dbtbpre}enewstagsdata as a LEFT JOIN {$dbtbpre}ecms_{$tbname} as b ON a.id=b.id where a.tagid={$tr[tagid]} and a.id<>{$id} limit ".$num;
$tsql=$empire->query($sql);
while($tt=$empire->fetch($tsql)){
$str.=' '.$tt[title].'';
$num--;
}
$num=$num-$total;
$sql2="select * from {$dbtbpre}ecms_{$tbname} limit ".$num;
$tsql2=$empire->query($sql2);
while($tt2=$empire->fetch($tsql2)){
$str.=' '.$tt2[title].'';
}
}
return $str;
}