php smarty 双循环(递归)输出分类 问题
模版
php code{foreach from=$classlist item=newsclass} {$newsclass.classname}
{/foreach}
程序
php code$sql = select * from jh_newsclass where parentid = 0;$result = $mysqli->query($sql);while ($row = $result->fetch_row()) { $classlist[] = array( 'id'=>$row[0], 'classname'=>$row[2], 'parentid'=>$row[1], 'ispro'=>$row[3], );}$result->close();$mysqli->close();$smarty->assign('classlist',$classlist);$smarty->assign('webname',webname);$smarty->display('admin/left.htm');
这样只能输出一级分类. 我需要在一级分类下再输出二级..三级..该怎么写呀?
以前用asp输出的效果
html code 新闻专题
+--新闻动态+--美大专题+--月兔专题
供求信息
产品展示
+--美大灶具+--月图厨柜+--集成效果

原来的asp代码 
html code
) while not showparentclassrs.eof response.write set temprs = conn.execute(select * from jh_newsclass where parentid = & showparentclassrs(id)) if temprs.eof and temprs.bof then response.write & astr & tree & & showparentclassrs(classname)& else response.write astr & tree & & showparentclassrs(classname) end if set temprs = nothing response.write call showparentclass(astr,tree&--,showparentclassrs(id)) showparentclassrs.movenext wend response.write(
) end ifend sub%>