方法1：[totaldata]$GLOBALS[navclassid],0,0[/totaldata]

方法2：<?php
$classid=$GLOBALS[navclassid]; //获取当前栏目ID
$r=$empire->fetch1("select count(*) as total from {$dbtbpre}ecms_news where classid='$classid'");
echo $r['total'];
?>