PHP SMARTY 双循环(递归)输出分类 有关问题

PHP SMARTY 双循环(递归)输出分类 问题
模版

PHP code

<!--

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-->{foreach from=$classlist item=newsclass}
    <div class="bg03"><a href="news.php?classid=%7B%24newsclass.id%7D&%7Bif%20%24newsclass.ispro%20eq%201%7Dispro=true%7B/if%7D" target="main">{$newsclass.classname}</a></div>
{/foreach}

程序

PHP code

<!--

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-->$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

<!--

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-->              <div class="bg03">新闻专题</div>
<div class="forumlist_groups"><div align="left"><ul>
<li class="forumli"><a href="news.asp?classid=3&newsclass=3" target="main">+--<img  id="folder180" src="images/leaf.gif"    style="max-width:90%"  style="max-width:90%" align="absmiddle" alt=" PHP SMARTY 双循环(递归)输出分类 有关问题 " ><font color="">新闻动态</font></a></li>
<li class="forumli"><a href="news.asp?classid=6&newsclass=6" target="main">+--<img  id="folder180" src="images/leaf.gif"    style="max-width:90%"  style="max-width:90%" align="absmiddle" alt=" PHP SMARTY 双循环(递归)输出分类 有关问题 " ><font color="">美大专题</font></a></li>
<li class="forumli"><a href="news.asp?classid=16&newsclass=16" target="main">+--<img  id="folder180" src="images/leaf.gif"    style="max-width:90%"  style="max-width:90%" align="absmiddle" alt=" PHP SMARTY 双循环(递归)输出分类 有关问题 " ><font color="">月兔专题</font></a></li>
</ul></div></div>

    <div class="bg03"><a href="news.asp?classid=14&newsclass=14" target="main">供求信息</a></div>

              <div class="bg03">产品展示</div>
<div class="forumlist_groups"><div align="left"><ul>
<li class="forumli"><a href="news.asp?classid=18&ispro=true&newsclass=18" target="main">+--<img  id="folder180" src="images/leaf.gif"    style="max-width:90%"  style="max-width:90%" align="absmiddle" alt=" PHP SMARTY 双循环(递归)输出分类 有关问题 " ><font color="">美大灶具</font></a></li>
<li class="forumli"><a href="news.asp?classid=19&ispro=true&newsclass=19" target="main">+--<img  id="folder180" src="images/leaf.gif"    style="max-width:90%"  style="max-width:90%" align="absmiddle" alt=" PHP SMARTY 双循环(递归)输出分类 有关问题 " ><font color="">月图厨柜</font></a></li>
<li class="forumli"><a href="news.asp?classid=20&ispro=true&newsclass=20" target="main">+--<img  id="folder180" src="images/leaf.gif"    style="max-width:90%"  style="max-width:90%" align="absmiddle" alt=" PHP SMARTY 双循环(递归)输出分类 有关问题 " ><font color="">集成效果</font></a></li>
</ul></div></div>

原来的ASP代码 

HTML code

<!--

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-->






    <div class="bg03"><a href="news.php?classid=<%=rs(" id>&newsclass=" target="main"></a></div>

              <div class="bg03"></div>

        

<div align="left"><ul>")
        while not showparentclassrs.eof

            response.Write"<li class="" forumli>"
            set temprs = conn.execute("select * from Jh_newsclass where parentid = " & showparentclassrs("id"))
            if temprs.eof and temprs.bof then
                response.Write"<a href="news.php?classid=%22&showparentclassrs(%22id%22)%0A%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20if%20showparentclassrs(%22ispro%22)%20then%20response.Write(%22&ispro=true%22)%0A%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20response.Write%22&newsclass=%22&showparentclassrs(%22id%22)&%22" target="main">" & astr & tree & "<img  id="" folder180 src="" images    style="max-width:90%" height="" align="" absmiddle alt=" PHP SMARTY 双循环(递归)输出分类 有关问题 " ><font color="">" & showparentclassrs("classname")&"</font></a>"
            else
                response.Write astr & tree & "<img  id="" folder180 src="" images    style="max-width:90%" height="" align="" absmiddle alt=" PHP SMARTY 双循环(递归)输出分类 有关问题 " >" & showparentclassrs("classname")
            end if
            set temprs = nothing
            response.Write"</li>"


            call showparentclass(astr,tree&"--",showparentclassrs("id"))
        showparentclassrs.movenext
        wend
    response.Write("</ul></div>")
    end if
end sub
%>
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