php+mysql数据库无限分类代码
本款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:
<?php
//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 ? $parent : 0;
$this->data[$id] = $value;
$this->child[$id] = array();
$this->child[$parent][] = $id;
$this->parent[$id] = $parent;
$this->layer[$id] = !isset($this->layer[$parent]) ? 0 : $this->layer[$parent] + 1;
}
function getlist(&$tree, $root = 0) {
foreach ($this->child[$root] as $key => $id) {
$tree[] = $id;
if ($this->child[$id]) $this->getlist($tree, $id);
}
}
function getvalue($id) {
return $this->data[$id];
}
function getlayer($id, $space = false) {
return $space ? str_repeat($space, $this->layer[$id]) : $this->layer[$id];
}
function getparent($id) {
return $this->parent[$id];
}
function getparents($id) {
while ($this->parent[$id] != - 1) {
$id = $parent[$this->layer[$id]] = $this->parent[$id];
}
ksort($parent);
reset($parent);
return $parent;
}
function getchild($id) {
return $this->child[$id];
}
function getchilds($id = 0) {
$child = array(
$id
);
$this->getlist($child, $id);
return $child;
}
function addnode($name, $pid) {
//echo "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']) ? $_post['op'] : $_get['op'];
if (!emptyempty($op)) {
if ($op == 'add') {
$tree->addnode($_post['cname'], $_post['pid']);
back();
}
if ($op == 'mod') {
$tree->modnode($_post['cid'], $_post['cname']);
back();
}
if ($op == 'del') {
$tree->delnode($_get['cid']);
back();
}
if ($op == 'move') {
$tree->movenode($_post['who'], $_post['to']);
back(); //开源代码phprm.com
}
}
$category = $tree->getchilds();
?>前台调用实例代码如下:
<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';
$('name').style.border='1px solid red';
}
</script>
<form action="" method="post">
名称:<input type="text" id="name" name="cname" /> 添加到:<?=makeselect($category,'pid')<br />
<input type="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">
<?=makeselect($category,'who') gt;移动到:<?=makeselect($category,'to')
<input type="hidden" id="op" name="op" value="move" />
<input type="submit" value="submit" />
</form>
<ul>
<?php
foreach ($category as $id){
echo '<li>'.$tree->getlayer($id, '|- ').$tree->getvalue($id).' <a href="time.php?op=del&cid='.$id.'">del</a> <a onclick="mod('.$id.')">edit</a> </li>';
}
</ul>用phpmyadmin导入此数据库就ok了,实例代码如下:
-- phpmyadmin sql dump -- version 3.2.4 -- http://www.phprm.com -- -- 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 */;
教程网址:http://www.phprm.com/mxdx/fs5423.html
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