本文实例讲述了php+mysql数据库实现无限分类的方法。分享给大家供大家参考。具体分析如下：

这款php无限分类代码比较完整理包括了数据库是mysql的,有增加、删除、编辑、移动的功能,同时还提供数据库sql表结构.代码如下:
复制代码 代码如下://连接数据库
$link = mysql_connect('localhost','root','') or die(mysql_error());
mysql_select_db('class',$link)or die(mysql_error());
mysql_query("set names gbk");
//无限分类类库
class sortclass{
var $data = array();
var $child = array(-1=>array());
var $layer = array(-1=>-1);
var $parent = array();
var $link;
var $table;
function sortclass($link, $table){
$this->setnode(0, -1, '顶极节点');
$this->link = $link;
$this->table = $table;
$node = array();
$results = mysql_query("select * from $this->table",$this->link);
while($node = mysql_fetch_array($results)){
$this->setnode($node['id'],$node['f_id'],$node['name']);
}
}
function setnode ($id, $parent, $value){
$parent = $parent"insert into $this->table (`f_id`,`name`) values ('$pid','$name')";exit;
mysql_query("insert into $this->table (`f_id`,`name`) values ('$pid','$name')",$this->link);
}
function modnode($cid, $newname){
mysql_query("update $this->table set `name`='$newname' where `id` = $cid",$this->link);
}
function delnode($cid){
$allchilds = $this->getchilds($cid);
$sql ='';
if(emptyempty($allchilds)){
$sql = "delete from $this->table where `id` = $cid";
}else{
$sql = 'delete from '.$this->table.' where `id` in ('.implode(',',$allchilds).','.$cid.')';
}
mysql_query($sql,$this->link);
}
function movenode($cid, $topid){
mysql_query("update $this->table set `f_id`=$topid where `id` = $cid", $this->link);
}
}
//函数
function back(){
echo '<script language="网页特效">window.location.href="news.class.php"+new date().gettime();</script>';
exit;
}
//生成select
function makeselect($array,$formname){
global $tree;
$select = '<select name="'.$formname.'">';
foreach ($array as $id){
$select.='<option value="'.$id.'">'.$tree->getlayer($id, '|-').$tree->getvalue($id)."</option>";
}
return $select.'</select>';
}
$tree = new sortclass($link,'`p_newsclass`');
$op = !emptyempty($_post['op']) "codetitle">复制代码 代码如下:<style type="text/css">
body{font-size:12px;}
ul{list-style:none;}
a{cursor:pointer;}
</style>
<script language="javascript">
function $(e){return document.getelementbyid(e);}
function mod(cid){
$('cid').value=cid;
$('op').value='mod';
$('name').style.border='1px solid red';
}
</script>
<form action="" method="post">
名称:<input type="text" id="name" name="cname" /> 添加到:<"hidden" id="op" name="op" value="add" />
<input type="hidden" id="cid" name="cid" />
<input type="submit" value="submit" />
</form>
<h3>移动分类</h3>
<form action="" method="post">
<"hidden" id="op" name="op" value="move" />
<input type="submit" value="submit" />
</form>
<ul>
<"time.php">del</a> <a onclick="mod('.$id.')">edit</a> </li>';
}
"codetitle">复制代码 代码如下:-- phpmyadmin sql dump
-- version 3.2.4
--
-- 主机: localhost
-- 生成日期: 2010 年 07 月 02 日 03:02
-- 服务器版本: 5.1.41
-- php 版本: 5.3.1
set sql_mode="no_auto_value_on_zero";
 
/*!40101 set @old_character_set_client=@@character_set_client */;
/*!40101 set @old_character_set_results=@@character_set_results */;
/*!40101 set @old_collation_connection=@@collation_connection */;
/*!40101 set names utf8 */;
--
-- 数据库: `class`
--
-- --------------------------------------------------------
--
-- 表的结构 `p_newsclass`
--
create table if not exists `p_newsclass` (
  `id` int(7) not null auto_increment,
  `f_id` int(7) not null,
  `name` varchar(255) not null,
  primary key (`id`)
) engine=innodb  default charset=utf8 auto_increment=10 ;
--
-- 转存表中的数据 `p_newsclass`
--
insert into `p_newsclass` (`id`, `f_id`, `name`) values
(3, 0, '中国'),
(4, 3, '福建'),
(5, 4, '龙岩市'),
(7, 4, '厦门市'),
(9, 5, '漳平市');
/*!40101 set character_set_client=@old_character_set_client */;
/*!40101 set character_set_results=@old_character_set_results */;
/*!40101 set collation_connection=@old_collation_connection */;

希望本文所述对大家的PHP+mysql程序设计有所帮助。