西湖的风景是那样的雄伟壮观；湖水是那样清澈；是那样的平静，像一面镜子；湖边的景色是那样的美不胜收。
本文实例讲述了thinkPHP实现的联动菜单功能。分享给大家供大家参考，具体如下：
联动菜单，首先给你看看前端是怎么写的：
<div id="newCat">
<div class="all_type" id="allGoogsCat">所有商品分类</div>
<div class="spfl-warp <?php if(CONTROLLER_NAME != 'Index' || ACTION_NAME != 'index'){echo 'hide';} ?> ">
<div class="index-spfl-left" id="divCatList">
<ul>
<foreach name="category_menu" key="one" item="v">
<li class="li{$one+1}">
<span><em></em>
<a rel="nofollow noopener noreferrer" href="{:U('Category/index',array('id'=>$v['category_id'],'level'=>1))}" rel="external nofollow" >{$v.category_name}</a>
</span>
<div class="div none">
<foreach name="v['childs']" key="two" item="v2">
<dl>
<dt>
<a rel="nofollow noopener noreferrer" href="{:U('Category/index',array('id'=>$v2['category_id'],'level'=>2))}" rel="external nofollow" >{$v2.category_name}</a>
</dt>
<dd class="fl">
<foreach name="v2['childs']" item="v3">
<a rel="nofollow noopener noreferrer" href="{:U('Category/index',array('id'=>$v3['category_id'],'level'=>3))}" rel="external nofollow" >
{$v3.category_name}
</a>
</foreach>
</dd>
<div class="cl"></div>
</dl>
</foreach>
</div>
</li>
</foreach>
</ul>
</div>
</div>
</div>
<script type="text/javascript">
<?php if(CONTROLLER_NAME != 'Index' || ACTION_NAME != 'index'){ ?>
//商品分类鼠标滑过
function spflHover() {
$(".index-spfl-left ul li").live("mouseover", function () {
$(this).addClass("active").siblings().removeClass("active");
$(".index-spfl-left").find(".div").hide();
$(this).find(".div").show();
}).live("mouseout", function () {
$(this).removeClass("active");
$(".index-spfl-left").find(".div").hide();
$(this).find(".div").hide();
});
//鼠标滑过分类显示
$("#newCat").mouseover(function () {
$(".spfl-warp").show();
}).mouseout(function () {
if ($("#ismain").val() == "1") {
$(".spfl-warp").show();
} else {
$(".spfl-warp").hide();
}
})
}
spflHover();
<?php } ?>
</script>
看到没有，其实里面的一级菜单对应二级菜单都是在同一个li里面的，li里面的二级三级呢，都是放在dl的dt和dd标签里面；
然后现在我们看看取出来的category_menu,什么样的数据：
Array
(
[0] => Array
(
[category_id] => 84
[category_name] => 家装主材
[parent_id] => 0
[listorder] => 200
[display] => 1
[childs] => Array
(
[0] => Array
(
[category_id] => 85
[category_name] => 厨卫
[parent_id] => 84
[listorder] => 200
[display] => 1
[childs] => Array
(
[0] => Array
(
[category_id] => 99
[category_name] => 厨盆/水槽
[parent_id] => 85
[listorder] => 200
[display] => 1
[childs] => Array
(
)
)
[1] => Array
(
[category_id] => 98
[category_name] => 卫浴配件
[parent_id] => 85
[listorder] => 200
[display] => 1
[childs] => Array
(
)
)
[2] => Array
(
[category_id] => 97
[category_name] => 卫浴龙头
[parent_id] => 85
[listorder] => 200
[display] => 1
[childs] => Array
(
)
)
[3] => Array
(
[category_id] => 96
[category_name] => 龙头
[parent_id] => 85
[listorder] => 200
[display] => 1
[childs] => Array
(
)
)
[4] => Array
(
[category_id] => 95
[category_name] => 淋浴房
[parent_id] => 85
[listorder] => 200
[display] => 1
[childs] => Array
(
)
)
[5] => Array
(
[category_id] => 94
[category_name] => 智能坐便器
[parent_id] => 85
[listorder] => 200
[display] => 1
[childs] => Array
(
)
)
[6] => Array
(
[category_id] => 93
[category_name] => 浴室柜
[parent_id] => 85
[listorder] => 200
[display] => 1
[childs] => Array
(
)
)
[7] => Array
(
[category_id] => 92
[category_name] => 坐便器
[parent_id] => 85
[listorder] => 200
[display] => 1
[childs] => Array
(
)
)
[8] => Array
(
[category_id] => 91
[category_name] => 浴霸
[parent_id] => 85
[listorder] => 200
[display] => 1
[childs] => Array
(
)
)
[9] => Array
(
[category_id] => 90
[category_name] => 地漏
[parent_id] => 85
[listorder] => 200
[display] => 1
[childs] => Array
(
)
)
[10] => Array
(
[category_id] => 89
[category_name] => 坐便器盖板
[parent_id] => 85
[listorder] => 200
[display] => 1
[childs] => Array
(
)
)
[11] => Array
(
[category_id] => 88
[category_name] => 洗面盆
[parent_id] => 85
[listorder] => 200
[display] => 1
[childs] => Array
(
)
)
[12] => Array
(
[category_id] => 87
[category_name] => 角阀
[parent_id] => 85
[listorder] => 200
[display] => 1
[childs] => Array
(
)
)
[13] => Array
(
[category_id] => 100
[category_name] => 卫浴五金
[parent_id] => 85
[listorder] => 200
[display] => 1
[childs] => Array
(
)
)
[14] => Array
(
[category_id] => 101
[category_name] => 厨房挂件/配件
[parent_id] => 85
[listorder] => 200
[display] => 1
[childs] => Array
(
)
)
[15] => Array
(
[category_id] => 86
[category_name] => 淋浴花洒
[parent_id] => 85
[listorder] => 200
[display] => 1
[childs] => Array
(
)
)
)
)
[1] => Array
(
[category_id] => 126
[category_name] => 墙纸
[parent_id] => 84
[listorder] => 200
[display] => 1
[childs] => Array
(
[0] => Array
(
[category_id] => 130
[category_name] => 3D墙纸
[parent_id] => 126
[listorder] => 200
[display] => 1
[childs] => Array
(
)
)
[1] => Array
(
[category_id] => 129
[category_name] => 纯纸墙纸
[parent_id] => 126
[listorder] => 200
[display] => 1
[childs] => Array
(
)
)
[2] => Array
(
[category_id] => 128
[category_name] => PVC墙纸
[parent_id] => 126
[listorder] => 200
[display] => 1
[childs] => Array
(
)
)
然后，数据表是怎么样的数据呢：
Array
(
[0] => Array
(
[category_id] => 211
[category_name] => 鞋柜
[parent_id] => 31
[listorder] => 200
[display] => 1
)
[1] => Array
(
[category_id] => 194
[category_name] => 相框/照片墙
[parent_id] => 189
[listorder] => 200
[display] => 1
)
[2] => Array
(
[category_id] => 193
[category_name] => 帘艺隔断
[parent_id] => 189
[listorder] => 200
[display] => 1
)
[3] => Array
(
[category_id] => 192
[category_name] => 沙发垫套/椅垫
[parent_id] => 189
[listorder] => 200
[display] => 1
)
[4] => Array
(
[category_id] => 191
[category_name] => 地毯地垫
[parent_id] => 189
[listorder] => 200
[display] => 1
)
[5] => Array
(
[category_id] => 190
[category_name] => 桌布/罩件
[parent_id] => 189
[listorder] => 200
[display] => 1
)
数据表数据是酱紫的；
然后，你能写出那个处理数组的方法吗，给你原数据，然后你用迭代处理成你想要的数据，不用太多，6行代码左右，你OK？
代码拷贝多了，人也就变傻了，知不知道？？？
//把栏目分组，以多维数组形式
public function group_category($id = 0)
{
$list=$this->where('display = 1')->order('listorder asc')->select();
$tmp = array();
foreach($list as $v){
if($v['parent_id'] == $id){
$v['childs'] = $this->group_category($v['category_id']);
$tmp[] = $v;
}
}
return $tmp;
}
为什么不把SQL语句放在外面作为参数传递进去函数groud_category函数呢？这样就不用老是查数据库啊。
无非也就是将父ID为0开始查询，然后对其子栏目的id在做为父ID进行查询，查询出属于其id的子栏目
希望本文所述对大家基于ThinkPHP框架的PHP程序设计有所帮助。
本文thinkPHP如何实现的联动菜单功能详解到此结束。一时的挫折往往能够经过不屈的搏击，变成学问及见识。小编再次感谢大家对我们的支持！