用一个
id
f_id
f_name 就可以了。
id
f_id
f_name 就可以了。
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<?php
/**
* @author YangHuan,Fonqing
* @datetime
* @version 1.0.0
* This class base at Yanghuan's PHP Tree
* Modify By Fonqing:
* Memo:
* 1,Add some method functions
*/
class SortClass{
public $data = array();
public $child = array(-1=>array());
public $layer = array(-1=>-1);
public $parent = array();
public $link;
public $table;
/**
* void SortClass($link, $table)
* The constructor of the class
* @param $link resource MySQL link identifier
* @param $table string The name of the category talbe
* @return void
*/
function SortClass($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_assoc($results)){
$this->setNode($node['cid'],$node['pid'],$node['cname']);
}
}
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 $child;
}
/**
* void addNode($name, $pid)
* Add a new Node to the tree and insert into the database
* @param $name string The node name
* @param $pid integer The parent node of this new node
* @return void
*/
function addNode($name, $pid){
mysql_query("insert into $this->table (`pid`,`cname`) values ('$pid','$name')", $this->link);
}
/**
* void modNode($cid, $newName)
* Modify a node to a new name
* @param $cid integer The `cid` of the node which to modify
* @param $newName string The new name
* @return void
*/
function modNode($cid, $newName){
mysql_query("update $this->table set `cname`='$newName' where `cid` = $cid", $this->link);
}
/**
* void delNode($cid)
* Delete a node and all of its childs
* @param $cid integer The node to delete
* @return void
*/
function delNode($cid){
$allChilds = $this->getChilds($cid);
$sql ='';
if(empty($allChilds)){
$sql = "delete from $this->table where `cid` = $cid";
}else{
$sql = 'delete from '.$this->table.' where `cid` in ('.implode(',',$allChilds).','.$cid.')';
}
mysql_query($sql, $this->link);
}
/**
* void moveNode($cid, $topid)
* Add a new Node to the tree and insert into the database
* @param $cid integer The node id which to move
* @param $topid integer New parent id
* @return void
*/
function moveNode($cid, $topid){
$tos = $this->getChilds($cid);
if(in_array($topid,$tos)) return;//不能移动到其子分类
mysql_query("update $this->table set `pid`=$topid where `cid` = $cid", $this->link);
}
function __destruct(){
unset($this->data,
$this->child,
$this->parent,
$this->layer);
}
}
?>
<?php
header("Content-type: text/html; charset=utf-8");
//Import the class
require('Class.sort.php');
//Connect to the MySQL server
$link = mysql_connect('host','user','pass') or die(mysql_error());
mysql_select_db('sortclass',$link);
$tree = new SortClass($link,'`class`');
//Some functions
function back(){
echo '<script language="javascript">window.location.href="test.php?"+new Date().getTime();</script>';
exit;
}
//Create select html
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>';
}
//Controller
$op = !empty($_POST['op']) ? $_POST['op'] : $_GET['op'];
if(!empty($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();
}
}
$category = $tree->getChilds();
?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html>
<head>
<meta http-equiv="Content-type" content="text/html; charset=utf-8" />
<title>无限分类示例</title>
<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='2px solid red';
$('name').value = '这里填写新名称';
}
</script>
</head>
<body>
<h3>编辑分类</h3>
<form action="test.php" method="post">
名称:<input type="text" id="name" name="cname" /> 添加到:<?=makeSelect($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="test.php" method="post">
<?=makeSelect($category,'who')?>移动到:<?=makeSelect($category,'to')?>
<input type="hidden" id="op" name="op" value="move" />
<input type="submit" value="Submit" />
</form>
<ul>
<?php
//Display the tree
foreach ($category as $id){
echo '<li>'.$tree->getLayer($id, '|- ').$tree->getValue($id).' <a href="test.php?op=del&cid='.$id.'">Del</a> <a onclick="mod('.$id.')">Edit</a> </li>';
}
?>
</ul>
</body>
</html>
你的c_id字段用来记录 顶级分类 的 id字段 就好了呀。----------------------------------------------------------------------------------用一张表也可以做无限级分类呀。顶级分类:
id 分类ID
f_id 记录上级分类ID,最高级为0
f_name 分类名称
但我省去, 直接从第二级分类开始。
id
f_id
f_name 这个顶级分类其实不是顶级,他分为20个分类子分类
id
c_id 子分类字段序号
c_name 子分类字段名字
这个子分类是上面顶级分类的子类,每个顶级分类下有几十个小分类。
说着看着,越来越乱。我的方法是从一本书中搬过来的。书中只设定好数据库,SQL中用INNER JOIN,不多的代码就解决了这个分类问题。
书名《PHP+mysql八大WEB动态实战》,看过这说的请解释解释。红心兄弟第一个代码大军也太庞大了吧。
我先试试红心兄弟第二个例子。
header("Content-type: text/html; charset=utf-8");
//Import the class
require('Class.sort.php');
//Connect to the MySQL server
$link = mysql_connect('host','user','pass') or die(mysql_error());
mysql_select_db('sortclass',$link);
$tree = new SortClass($link,'`class`');
//Some functions
第二行就看不懂。
require('Class.sort.php');这个'Class.sort.php是哪里跑来的文件?