【www.gdgbn.com--excel】


//连接数据库教程
$link = mysql教程_connect("localhost","root","密码") or die(mysql_error());
mysql_select_db("sortclass",$link);
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_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 $child;
}
function addnode($name,$pid){
mysql_query("insert into $this->table (`pid`,`cname`) values ("$pid","$name")",$this->link);
}
function modnode($cid, $newname){
mysql_query("update $this->table set `cname`="$newname" where `cid` = $cid",$this->link);
}
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);
}
function movenode($cid, $topid){
mysql_query("update $this->table set `pid`=$topid where `cid` = $cid", $this->link);
}
}
//函数
function back(){
echo "<script language="网页特效">window.location.href="class.php?"+new date().gettime();</script>";
exit;
}
//生成select
function makeselect($array,$formname){
global $tree;
$select = "";
}
$tree = new sortclass($link,"`class`");
$op = !empty($_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();
?>

<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>

添加分类



名称: 添加到:





移动分类



移动到:




foreach ($category as $id){
echo "".$tree->getlayer($id, "|－ ").$tree->getvalue($id)." del edit ";
}
?>

完整的新闻无限级分类代码,可添加,删除,移动,修改


顶极节点 del   edit
|－ 1级分类del   edit
|－ 1级分类 del   edit
|－ 1级分类 del   edit
|－ |－ 2级分类 del   edit
|－ |－ |－ 3级分类 del  edit
|－ |－ |－|－ 4级分类 del  edit
|－ 1级分类 del   edit


本文来源：http://www.gdgbn.com/bangongshuma/28477/