php+mysql数据库无限分类代码(1/2)_PHP教程

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.

php教程+mysql教程数据库教程无限分类代码
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.

//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); $sql =''; if(empty($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", $this->link); } } //函数 function back(){ echo 'window.location.href="news.class.php?"+new date().gettime();'; exit; } //生成select function makeselect($array,$formname){ global $tree; $select = ''; foreach ($array as $id){ $select.=''.$tree->getlayer($id, '|-').$tree->getvalue($id).""; } return $select.''; } $tree = new sortclass($link,'`p_newsclass`'); $op = !empty($_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(); ?>

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