帝国CMS无限级导航下拉函数php代码

<?php function daohang($bclassid = 0) {     global $empire, $dbtbpre, $public_r;     $sql = $empire->query("select * from {$dbtbpre}enewsclass where bclassid=$bclassid order by myorder, classid");     while ($r = $empire->fetch($sql)) {         $jclassURL = @sys_ReturnBqClassname($r, 9);         $num = @ReturnClassInfoNum($r);         if (empty($r['islast'])) {             echo '<ul>' . '<a href="' . $jclassURL . '">' . $r['classname'] . '</a>' . '(' . $num . ')' . '</ul>';             daohang($r['classid']);         } else {             echo '<li>' . '<a href="' . $jclassURL . '">' . $r['classname'] . '</a>' . '(' . $num . ')' . '</li>';         }     } } echo '<ul>'; daohang(0); echo '</ul>'; ?>