PHP之多条件混合筛选功能的实现方法

<style type="text/css">

.search_text{ overflow:hidden; height:100%; padding-top:5px; padding-bottom:5px;}
.search_text h1{ color:#6a6a6a; font-weight:bold; float:left; font-size:14px; margin:0px; padding:0px;}
.search_text ul{ margin:0; padding:0; list-style:none; float:left; overflow:hidden; height:100%;}
.search_text li{ list-style:none; color:#6a6a6a; float:left; width:80px; padding-left:8px; padding-right:5px; white-space:nowrap}
.search_text li a{ list-style:none; color:#6a6a6a;}
.search_text li a:hover{ list-style:none; color:#fe8f01; font-weight:bold; text-decoration:underline;}
.search_text li.selected{color:#fe8f01; font-weight:bold;}
.search_text li.selected a{color:#fe8f01;}
.search_text li.selected a:hover{color:#fe8f01;}
</style>

<div class="search_text" id="year">
  <h1>生产年度：</h1>
  <ul>
   <li class="selected"><a href="javascript:goSort('year',0)" rel="external nofollow" >全部</a></li>
   <li><a href="javascript:goSort('year',1)" rel="external nofollow" >2015</a></li>
   <li><a href="javascript:goSort('year',2)" rel="external nofollow" >2014</a></li>
  </ul>
</div>
<div class="search_text" id="ctype">
  <h1>棉花类型：</h1>
  <ul>
   <li class="selected"><a href="javascript:goSort('ctype',0);" rel="external nofollow" >全部</a> </li>
   <li><a href="javascript:goSort('ctype',1);" rel="external nofollow" >手采棉</a></li>
   <li><a href="javascript:goSort('ctype',2);" rel="external nofollow" >机采棉</a></li>
   </li>
  </ul>
</div>
<div class="search_text" id="colors">
  <h1>颜 色 级 ：</h1>
  <ul>
   <li class="selected"><a href="javascript:goSort('colors',0);" rel="external nofollow" >全部</a> </li>
   <li><a href="javascript:goSort('colors',1);" rel="external nofollow" >白棉1级</a></li>
   <li><a href="javascript:goSort('colors',2);" rel="external nofollow" >白棉2级</a></li>
   <li><a href="javascript:goSort('colors',3);" rel="external nofollow" >白棉3级</a></li>
   <li><a href="javascript:goSort('colors',4);" rel="external nofollow" >白棉4级</a></li>
   <li><a href="javascript:goSort('colors',5);" rel="external nofollow" >白棉5级</a></li>
   <li><a href="javascript:goSort('colors',6);" rel="external nofollow" >淡点污棉1级</a></li>
  </ul>
</div>
<div class="search_text" id="lengths">
  <h1>长 度 级 ：</h1>
  <ul>
   <li class="selected"><a href="javascript:goSort('lengths',0);" rel="external nofollow" >全部</a> </li>
   <li><a href="javascript:goSort('lengths',1);" rel="external nofollow" >26CM</a></li>
   <li><a href="javascript:goSort('lengths',2);" rel="external nofollow" >27CM</a></li>
   <li><a href="javascript:goSort('lengths',3);" rel="external nofollow" >28CM</a></li>
   <li><a href="javascript:goSort('lengths',4);" rel="external nofollow" >29CM</a></li>
   <li><a href="javascript:goSort('lengths',5);" rel="external nofollow" >30CM</a></li>
   <li><a href="javascript:goSort('lengths',6);" rel="external nofollow" >31CM</a></li>
   <li><a href="javascript:goSort('lengths',7);" rel="external nofollow" >32CM</a></li>
  </ul>
</div>
<div class="search_text" id="micronaire">
  <h1>马克隆值：</h1>
  <ul>
   <li class="selected"><a href="javascript:goSort('micronaire',0);" rel="external nofollow" >全部</a> </li>
   <li><a href="javascript:goSort('micronaire',1);" rel="external nofollow" >C2</a></li>
   <li><a href="javascript:goSort('micronaire',2);" rel="external nofollow" >B2</a></li>
   <li><a href="javascript:goSort('micronaire',3);" rel="external nofollow" >A</a></li>
   <li><a href="javascript:goSort('micronaire',4);" rel="external nofollow" >B1</a></li>
   <li><a href="javascript:goSort('micronaire',5);" rel="external nofollow" >C1</a></li>
  </ul>
</div>