首先看看效果图：
1.数据配置文件 db.php
<?php return array( array( ‘one‘ => ‘关于我们‘, ‘two‘ => array( array( ‘three_tit‘ => ‘公司介绍‘, ‘three_cont‘ => array( ‘企业概况‘, ‘组织架构‘, ‘发展历程‘, ‘企业文化‘, ‘服务理念‘ ) ), array( ‘three_tit‘ => ‘企业荣誉‘, ‘three_cont‘ => array( ‘获奖证书‘, ‘行业贡献‘, ‘资质认证‘, ‘协会活动‘, ‘公司的成就‘) ), array( ‘three_tit‘ => ‘销售网络‘, ‘three_cont‘ => array( ‘东北‘, ‘华北‘, ‘中东‘, ‘华南‘, ‘西南‘, ‘西北‘ ) ) ) ), array( ‘one‘ => ‘产品展示‘, ‘two‘ => array( array( ‘three_tit‘ => ‘进出口贸易‘, ‘three_cont‘ => array( ‘数码产品‘, ‘最新能源‘, ‘新鲜水果‘, ‘肉类食品‘, ‘衣服‘, ‘金银首饰‘ ) ), array( ‘three_tit‘ => ‘商业服务‘, ‘three_cont‘ => array( ‘资格认证‘, ‘人才培养‘, ‘热门商品推荐‘, ‘最新科技前沿‘ ) ) ) ), array( ‘one‘ => ‘新闻中心‘, ‘two‘ => array( array( ‘three_tit‘ => ‘企业动态‘, ‘three_cont‘ => array( ‘公司新闻‘, ‘新品上市‘, ‘企业动态‘ ) ), array( ‘three_tit‘ => ‘行业动态‘, ‘three_cont‘ => array( ‘媒体聚焦‘, ‘业内关注‘, ‘国内行情‘, ‘国际行情‘ ) ) ) ), array( ‘one‘ => ‘联系我们‘, ‘two‘ => array( array( ‘three_tit‘ => ‘联系方式‘, ‘three_cont‘ => array( ‘在线客服‘, ‘通信地址‘, ‘电话传真‘, ‘在线留言‘ ) ), array( ‘three_tit‘ => ‘人才招聘‘, ‘three_cont‘ => array( ‘项目经理‘, ‘助理秘书‘, ‘渠道代理‘, ‘网站工程师‘ ) ) ) ) ); ?>
<?php header(‘Content-type:text/html;charset=utf-8‘); // 载入数据 $data = include ‘./db.php‘; // 载入html文件 include ‘./nav.html‘; ?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<script type="text/javascript" src="./js/jquery-1.7.2.min.js"></script>
<script type="text/javascript">
$(function(){
//对元素进行隐藏
$(‘.menu>li‘).eq(4).find(‘s‘).hide();
$(‘.two li‘).last().css(‘border‘,‘none‘);
//鼠标移入和移出事件
$(‘.menu li‘).hover(function(){
$(this).find(‘.two‘).show();
//鼠标移入和移出事件
$(‘.two li‘).hover(function(){
$(this).find(‘.hide‘).show();
},function(){
$(this).find(‘.hide‘).hide();
});
},function(){
$(this).find(‘.two‘).hide();
});
})
</script>
<title>无标题文档</title>
<style type="text/css">
*{
padding: 0;
margin: 0;
}
body{
font: 18px/50px ‘微软雅黑‘;
color: #FFF;
}
li{
list-style: none;
}
a{
text-decoration: none;
color: #FFF;
}
#nav{
width: 610px;
height: 50px;
background: #01532B;
margin: 30px auto;
border-radius: 5px;
box-shadow: 2px 3px 2px #479E33;
}
#nav ul.menu{
padding: 0 5px;
}
#nav ul.menu li{
width: 120px;
height: 50px;
line-height: 50px;
text-align: center;
float: left;
position: relative;
}
#nav ul.menu li a{
display: block;
text-shadow:0px 1px 1px #479E33;
}
#nav ul.menu li a:hover{
color: #FFF;
background: #479E33;
}
#nav ul.menu li s{
width: 0px;
height: 30px;
border-left: 1px solid #479E33;
display: block;
position: absolute;
right: 0;
top: 10px;
}
#nav ul.menu li ul{
position: absolute;
top: 50px;
left: 0;
background: #479E33;
border-radius: 0 0 3px 3px;
box-shadow: 2px 3px 2px #479E33;
}
#nav ul.menu li ul li{
border-bottom: 1px solid #479E33;
width: 120px;
position: relative;
}
#nav ul.menu li ul li a{
font-size: 16px;
}
#nav ul.menu li ul li .hide{
position: absolute;
top: 0px;
left: 120px;
}
#nav ul.menu li ul li .hide li{
border-left: 1px solid #479E33;
}
#nav ul.menu li ul li .hide li a{
font-size: 14px;
}
.two,.hide{
display: none;
}
</style>
</head>
<body>
<div id="nav">
<ul class="menu">
<li><a href="">网站首页</a><s></s></li>
<?php foreach($data as $v) { ?>
<li>
<a href=""><?php echo $v[‘one‘] ?></a><s></s>
<ul class="two">
<?php foreach ($v[‘two‘] as $val) { ?>
<li>
<a href=""><?php echo $val[‘three_tit‘] ?></a>
<ul class="hide">
<?php foreach ($val[‘three_cont‘] as $value) { ?>
<li><a href=""><?php echo $value ?></a></li>
<?php } ?>
</ul>
</li>
<?php } ?>
</ul>
</li>
<?php } ?>
</ul>
</div>
</body>
</html>
原文：http://blog.csdn.net/phpfenghuo/article/details/24938347