复制代码 代码如下:
/*
author: nick
date: 2009.05.17
功能：生成selettree
属性:
$result 结果集
$id_field 自身id字段
$parent_field 父类id字段
$option_text 选项显示名称
$select_name 下拉菜单的名称
$elected 默认选中
$no_top 是否需要顶层选项
$level 层深度
$parent_id 同层中的id
*/
class selecttree{
public $result;
public $select_name;
public $option_text;
public $elected;
public $id_field;
public $parent_field;
public $no_top;
public $level;
public $parent_id;
public $getarray;
function __construct($result,$id_field,$parent_field,$option_text,$select_name='',$elected=0,$no_top=0,$level=0,$parent_id=0){
$this->result =$result;
$this->id_field =$id_field;
$this->parent_field =$parent_field;
$this->option_text =$option_text;
$this->select_name =$select_name;
$this->elected =$elected;
$this->no_top =$no_top;
$this->level =$level;
$this->parent_id =$parent_id;
$this->getarray =self::getarray();
}
/*
功能：返回tree二维数组
*/
function getarray(){
$arrays=array();
while($row=mysql_fetch_array($this->result)){
$arrays[$row[$this->parent_field]][$row[$this->id_field]]=$row;
}
return $arrays;
}
/*
功能：获取selecttree
*/
function getselecttree(){
$tree = 'select_name.'>';
if($no_top){
$tree .= '最顶层';
}
self::buildtree($this->getarray,&$tree,$this->id_field,$this->option_text,$this->selected,$this->level,$this->parent_id); //生成树状结构
$tree .= '';
return $tree;
}
/*
功能：递归构建树状结构
*/
function buildtree($array,&$tree,$option_value,$option_text,$selected,$level=0,$parent_id=0){
if(is_array($array[$parent_id])){
for($i=0;$i$space .= ' '; //选项缩进深度
foreach($array[$parent_id] as $key => $value){
if($value[$option_value] == $selected){
$tree .= ''.$space.$value[$option_text].;
}else{
$tree .= ''.$space.$value[$option_text].;
}
$tree .=self::buildtree($array,&$tree,$option_value,$option_text,$selected,$level+1,$key);
}
}else{
$tree .= '';
}
}
}
/****************************************************************************/
header(content-type:text/html;charset=utf-8);
mysql_connect(localhost,root,root);
mysql_select_db(tree);
mysql_query('set names utf8');
$result = mysql_query(select * from tvmenu);
$tree=new selecttree($result,'id','bid','name','tree');
echo $tree->getselecttree();
http://www.bkjia.com/phpjc/320110.htmlwww.bkjia.comtruehttp://www.bkjia.com/phpjc/320110.htmltecharticle复制代码 代码如下: /* author: nick date: 2009.05.17 功能：生成selettree 属性: $result 结果集 $id_field 自身id字段 $parent_field 父类id字段 $option_text 选项...