value取值问题。有php

Question

<form action="javascript:searchGoods();" name="searchForm">

    <ul style="list-style:none;width:100%;padding: 0;margin: 0;">

        {foreach from=$sub_series item=sub}

        <li  class="s{$sub.parent_id}" name="sub_cate_id" id="sub_cate_id" onclick="searchGoods();" value="{$sub.sapval}">{$sub.cat_name}</li>

        {/foreach}

    </ul>

</form>