php实现三级导航栏成效

<?phpreturn 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'					)			)		)	));?>

<?phpheader ('Content-type:text/html;charset=utf-8');  // 载入数据$data = include './db.php';   // 载入html文件include './nav.html';?>

<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(){			$(this).find('.two').hide();		});	})</script><title>无标题文档</title><style type="text/css">*{	padding: 0; 	margin: 0;}body{	font: 18px/50px '微软雅黑'; 	color: #FFF;}li{	list-style: none;}a{	text-decoration: none; 	color: #FFF;}#nav{	width: 610px; 	height: 50px; 	background: #01532B; 	margin: 30px auto; 	border-radius: 5px; 	box-shadow: 2px 3px 2px #479E33; }#nav ul.menu{	padding: 0 5px;}#nav ul.menu li{	width: 120px; 	height: 50px; 	line-height: 50px; 	text-align: center; 	float: left; 	position: relative;}#nav ul.menu li a{	display: block; 	text-shadow:0px 1px 1px #479E33;}#nav ul.menu li a:hover{	color: #FFF; 	background: #479E33;}#nav ul.menu li s{	width: 0px; 	height: 30px; 	border-left: 1px solid #479E33; 	display: block; 	position: absolute; 	right: 0; 	top: 10px;}#nav ul.menu li ul{	position: absolute; 	top: 50px; 	left: 0; 	background: #479E33; 	border-radius: 0 0 3px 3px; 	box-shadow: 2px 3px 2px #479E33;}#nav ul.menu li ul li{	border-bottom: 1px solid #479E33; 	width: 120px; 	position: relative;}#nav ul.menu li ul li a{	font-size: 16px;}	#nav ul.menu li ul li .hide{	position: absolute; 	top: 0px; 	left: 120px;}#nav ul.menu li ul li .hide li{	border-left: 1px solid #479E33;}#nav ul.menu li ul li .hide li a{	font-size: 14px;}.two,.hide{	display: none;}</style>	<div id="nav">		<ul class="menu">			<li>
<a href="">网站首页</a><s></s>
</li>			<?php foreach($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>