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104 lines
2.8 KiB
PHP
104 lines
2.8 KiB
PHP
<?php
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namespace service;
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/**
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* @name PHPTree
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* @author crazymus < QQ:291445576 >
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* @des PHP生成树形结构,无限多级分类
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* @version 1.2.0
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* @Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
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* @updated 2015-08-26
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*/
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class PHPTreeService{
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protected static $config = array(
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/* 主键 */
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'primary_key' => 'id',
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/* 父键 */
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'parent_key' => 'pid',
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/* 展开属性 */
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'expanded_key' => 'expanded',
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/* 叶子节点属性 */
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'leaf_key' => 'leaf',
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/* 孩子节点属性 */
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'children_key' => 'children',
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/* 是否展开子节点 */
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'expanded' => false
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);
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/* 结果集 */
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protected static $result = array();
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/* 层次暂存 */
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protected static $level = array();
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/**
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* @name 生成树形结构
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* @param array 二维数组
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* @return mixed 多维数组
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*/
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public static function makeTree($data,$options=array() ){
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$dataset = self::buildData($data,$options);
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$r = self::makeTreeCore(0,$dataset,'normal');
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return $r;
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}
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/* 生成线性结构, 便于HTML输出, 参数同上 */
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public static function makeTreeForHtml($data,$options=array()){
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$dataset = self::buildData($data,$options);
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$r = self::makeTreeCore(0,$dataset,'linear');
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return $r;
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}
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/* 格式化数据, 私有方法 */
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private static function buildData($data,$options){
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$config = array_merge(self::$config,$options);
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self::$config = $config;
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extract($config);
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$r = array();
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foreach($data as $item){
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$id = $item[$primary_key];
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$parent_id = $item[$parent_key];
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$r[$parent_id][$id] = $item;
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}
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return $r;
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}
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/* 生成树核心, 私有方法 */
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private static function makeTreeCore($index,$data,$type='linear')
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{
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extract(self::$config);
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foreach($data[$index] as $id=>$item)
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{
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if($type=='normal'){
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if(isset($data[$id]))
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{
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$item[$expanded_key]= self::$config['expanded'];
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$item[$children_key]= self::makeTreeCore($id,$data,$type);
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}
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else
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{
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$item[$leaf_key]= true;
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}
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$r[] = $item;
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}else if($type=='linear'){
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$parent_id = $item[$parent_key];
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self::$level[$id] = $index==0?0:self::$level[$parent_id]+1;
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$item['level'] = self::$level[$id];
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self::$result[] = $item;
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if(isset($data[$id])){
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self::makeTreeCore($id,$data,$type);
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}
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$r = self::$result;
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}
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}
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return $r;
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}
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}
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?>
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