?php
include 'tree.class.php';
//模擬數(shù)據(jù)庫
$data=array(
array('id'=>1,'pid'=>0,'name'=>'一級欄目一'),
array('id'=>2,'pid'=>0,'name'=>'一級欄目二'),
array('id'=>3,'pid'=>1,'name'=>'二級欄目一'),
array('id'=>4,'pid'=>3,'name'=>'三級欄目一'),
array('id'=>5,'pid'=>4,'name'=>'四級欄目一'),
);
//轉(zhuǎn)換數(shù)據(jù)
$tree_data=array();
foreach ($data as $key=>$value){
$tree_data[$value['id']]=array(
'id'=>$value['id'],
'parentid'=>$value['pid'],
'name'=>$value['name']
);
}
/**
* 輸出樹形結(jié)構(gòu)
*/
$str="tr>
td>input type='checkbox' name='list[\$id]' value='\$id'>/td>
td>\$id/td>
td>\$spacer\$name/td>
td>a href='add.php?id=\$id'>添加/a>/td>
td>a href='del.php?id=\$id'>刪除/a>/td>
td>a href='update.php?id='\$id'>修改/a>/td>
/tr>";
$tree=new Tree();
$tree->init($tree_data);
echo "table>";
echo $tree->get_tree(0, $str);
echo "/table>";
echo "br/>";
echo "br/>";
echo "br/>";
echo "br/>";
/**
* 輸出下拉列表
*/
$str="option value=\$id \$selected>\$spacer\$name/option>";
$tree=new Tree();
$tree->init($tree_data);
echo "select>";
echo $tree->get_tree(0, $str,2);
echo "/select>";
?php
/**
* 通用的樹型類，可以生成任何樹型結(jié)構(gòu)
*/
class tree {
/**
* 生成樹型結(jié)構(gòu)所需要的2維數(shù)組
* @var array
*/
public $arr = array();
/**
* 生成樹型結(jié)構(gòu)所需修飾符號，可以換成圖片
* @var array
*/
public $icon = array('│','├','└');
public $nbsp = " ";
/**
* @access private
*/
public $ret = '';
/**
* 構(gòu)造函數(shù)，初始化類
* @param array 2維數(shù)組，例如：
* array(
* 1 => array('id'=>'1','parentid'=>0,'name'=>'一級欄目一'),
* 2 => array('id'=>'2','parentid'=>0,'name'=>'一級欄目二'),
* 3 => array('id'=>'3','parentid'=>1,'name'=>'二級欄目一'),
* 4 => array('id'=>'4','parentid'=>1,'name'=>'二級欄目二'),
* 5 => array('id'=>'5','parentid'=>2,'name'=>'二級欄目三'),
* 6 => array('id'=>'6','parentid'=>3,'name'=>'三級欄目一'),
* 7 => array('id'=>'7','parentid'=>3,'name'=>'三級欄目二')
* )
*/
public function init($arr=array()){
$this->arr = $arr;
$this->ret = '';
return is_array($arr);
}
/**
* 得到父級數(shù)組
* @param int
* @return array
*/
public function get_parent($myid){
$newarr = array();
if(!isset($this->arr[$myid])) return false;
$pid = $this->arr[$myid]['parentid'];
$pid = $this->arr[$pid]['parentid'];
if(is_array($this->arr)){
foreach($this->arr as $id => $a){
if($a['parentid'] == $pid) $newarr[$id] = $a;
}
}
return $newarr;
}
/**
* 得到子級數(shù)組
* @param int
* @return array
*/
public function get_child($myid){
$a = $newarr = array();
if(is_array($this->arr)){
foreach($this->arr as $id => $a){
if($a['parentid'] == $myid) $newarr[$id] = $a;
}
}
return $newarr ? $newarr : false;
}
/**
* 得到當(dāng)前位置數(shù)組
* @param int
* @return array
*/
public function get_pos($myid,$newarr){
$a = array();
if(!isset($this->arr[$myid])) return false;
$newarr[] = $this->arr[$myid];
$pid = $this->arr[$myid]['parentid'];
if(isset($this->arr[$pid])){
$this->get_pos($pid,$newarr);
}
if(is_array($newarr)){
krsort($newarr);
foreach($newarr as $v){
$a[$v['id']] = $v;
}
}
return $a;
}
/**
* 得到樹型結(jié)構(gòu)
* @param int ID，表示獲得這個ID下的所有子級
* @param string 生成樹型結(jié)構(gòu)的基本代碼，例如："option value=\$id \$selected>\$spacer\$name/option>"
* @param int 被選中的ID，比如在做樹型下拉框的時候需要用到
* @return string
*/
public function get_tree($myid, $str, $sid = 0, $adds = '', $str_group = ''){
$number=1;
$child = $this->get_child($myid);
if(is_array($child)){
$total = count($child);
foreach($child as $id=>$value){
$j=$k='';
if($number==$total){
$j .= $this->icon[2];
}else{
$j .= $this->icon[1];
$k = $adds ? $this->icon[0] : '';
}
$spacer = $adds ? $adds.$j : '';
$selected = $id==$sid ? 'selected' : '';
@extract($value);
$parentid == 0 $str_group ? eval("\$nstr = \"$str_group\";") : eval("\$nstr = \"$str\";");
$this->ret .= $nstr;
$nbsp = $this->nbsp;
$this->get_tree($id, $str, $sid, $adds.$k.$nbsp,$str_group);
$number++;
}
}
return $this->ret;
}
/**
* 同上一方法類似,但允許多選
*/
public function get_tree_multi($myid, $str, $sid = 0, $adds = ''){
$number=1;
$child = $this->get_child($myid);
if(is_array($child)){
$total = count($child);
foreach($child as $id=>$a){
$j=$k='';
if($number==$total){
$j .= $this->icon[2];
}else{
$j .= $this->icon[1];
$k = $adds ? $this->icon[0] : '';
}
$spacer = $adds ? $adds.$j : '';
$selected = $this->have($sid,$id) ? 'selected' : '';
@extract($a);
eval("\$nstr = \"$str\";");
$this->ret .= $nstr;
$this->get_tree_multi($id, $str, $sid, $adds.$k.' ');
$number++;
}
}
return $this->ret;
}
/**
* @param integer $myid 要查詢的ID
* @param string $str 第一種HTML代碼方式
* @param string $str2 第二種HTML代碼方式
* @param integer $sid 默認(rèn)選中
* @param integer $adds 前綴
*/
public function get_tree_category($myid, $str, $str2, $sid = 0, $adds = ''){
$number=1;
$child = $this->get_child($myid);
if(is_array($child)){
$total = count($child);
foreach($child as $id=>$a){
$j=$k='';
if($number==$total){
$j .= $this->icon[2];
}else{
$j .= $this->icon[1];
$k = $adds ? $this->icon[0] : '';
}
$spacer = $adds ? $adds.$j : '';
$selected = $this->have($sid,$id) ? 'selected' : '';
@extract($a);
if (empty($html_disabled)) {
eval("\$nstr = \"$str\";");
} else {
eval("\$nstr = \"$str2\";");
}
$this->ret .= $nstr;
$this->get_tree_category($id, $str, $str2, $sid, $adds.$k.' ');
$number++;
}
}
return $this->ret;
}
/**
* 同上一類方法，jquery treeview 風(fēng)格，可伸縮樣式（需要treeview插件支持）
* @param $myid 表示獲得這個ID下的所有子級
* @param $effected_id 需要生成treeview目錄數(shù)的id
* @param $str 末級樣式
* @param $str2 目錄級別樣式
* @param $showlevel 直接顯示層級數(shù)，其余為異步顯示，0為全部限制
* @param $style 目錄樣式 默認(rèn) filetree 可增加其他樣式如'filetree treeview-famfamfam'
* @param $currentlevel 計(jì)算當(dāng)前層級，遞歸使用 適用改函數(shù)時不需要用該參數(shù)
* @param $recursion 遞歸使用 外部調(diào)用時為FALSE
*/
function get_treeview($myid,$effected_id='example',$str="span class='file'>\$name/span>", $str2="span class='folder'>\$name/span>" ,$showlevel = 0 ,$style='filetree ' , $currentlevel = 1,$recursion=FALSE) {
$child = $this->get_child($myid);
if(!defined('EFFECTED_INIT')){
$effected = ' id="'.$effected_id.'"';
define('EFFECTED_INIT', 1);
} else {
$effected = '';
}
$placeholder = 'ul>li>span class="placeholder">/span>/li>/ul>';
if(!$recursion) $this->str .='ul'.$effected.' class="'.$style.'">';
foreach($child as $id=>$a) {
@extract($a);
if($showlevel > 0 $showlevel == $currentlevel $this->get_child($id)) $folder = 'hasChildren'; //如設(shè)置顯示層級模式@2011.07.01
$floder_status = isset($folder) ? ' class="'.$folder.'"' : '';
$this->str .= $recursion ? 'ul>li'.$floder_status.' id=\''.$id.''>' : 'li'.$floder_status.' id=\''.$id.''>';
$recursion = FALSE;
if($this->get_child($id)){
eval("\$nstr = \"$str2\";");
$this->str .= $nstr;
if($showlevel == 0 || ($showlevel > 0 $showlevel > $currentlevel)) {
$this->get_treeview($id, $effected_id, $str, $str2, $showlevel, $style, $currentlevel+1, TRUE);
} elseif($showlevel > 0 $showlevel == $currentlevel) {
$this->str .= $placeholder;
}
} else {
eval("\$nstr = \"$str\";");
$this->str .= $nstr;
}
$this->str .=$recursion ? '/li>/ul>': '/li>';
}
if(!$recursion) $this->str .='/ul>';
return $this->str;
}
/**
* 獲取子欄目json
* Enter description here ...
* @param unknown_type $myid
*/
public function creat_sub_json($myid, $str='') {
$sub_cats = $this->get_child($myid);
$n = 0;
if(is_array($sub_cats)) foreach($sub_cats as $c) {
$data[$n]['id'] = iconv(CHARSET,'utf-8',$c['catid']);
if($this->get_child($c['catid'])) {
$data[$n]['liclass'] = 'hasChildren';
$data[$n]['children'] = array(array('text'=>' ','classes'=>'placeholder'));
$data[$n]['classes'] = 'folder';
$data[$n]['text'] = iconv(CHARSET,'utf-8',$c['catname']);
} else {
if($str) {
@extract(array_iconv($c,CHARSET,'utf-8'));
eval("\$data[$n]['text'] = \"$str\";");
} else {
$data[$n]['text'] = iconv(CHARSET,'utf-8',$c['catname']);
}
}
$n++;
}
return json_encode($data);
}
private function have($list,$item){
return(strpos(',,'.$list.',',','.$item.','));
}
}
?>
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