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Homephp教程php手册php实现多级分类筛选程序代码

现在这种多选择功能在很多网站都有,如现在很多电商网站都有N个条件选择了,下面小编为各位介绍一个简单的多级分类筛选实现方法。

主要注意这边有一个 $$这是变量的变量。 以后估计会常用这个做开发。

<?php
$conditions = array(&#39;price&#39;,&#39;color&#39;,&#39;metal&#39;);//要进行筛选的字段放在这里
$price = $color = $metal=&#39;&#39;;//先给需要筛选的字段赋空值,这些值将输出到页面的hidden fileds 中
//以下循环给已经进行的筛选赋值,以便能够在下一次筛选中保留
foreach($conditions as $value){
    if(isset($_GET[$value])){ 
        $$value = $_GET[$value];
    }
}
//以下是演示输出$_GET数据
echo &#39;<pre class="brush:php;toolbar:false">&#39;;
print_r($_GET);
echo &#39;
'; ?> nbsp;html> 分类筛选演示 <script> function Filter(a,b){ var $ = function(e){return document.getElementById(e);} var ipts = $(&#39;filterForm&#39;).getElementsByTagName(&#39;input&#39;),result=[]; for(var i=0,l=ipts.length;i<l;i++){ if(ipts[i].getAttribute(&#39;to&#39;)==&#39;filter&#39;){ result.push(ipts[i]); } } if($(a)){ $(a).value = b; for(var j=0,len=result.length;j<len;j++){ if(result[j].value==&#39;&#39;){ result[j].parentNode.removeChild(result[j]); } } document.forms[&#39;filterForm&#39;].submit(); } return false; } </script>
" /> " /> " />
价格:不限 100-1000       1001-2000      2001-3000
颜色:红色       蓝色
材质:纯金       纯银


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