93 lines
1.9 KiB
PHP
93 lines
1.9 KiB
PHP
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<?php
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/**
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* [Discuz!] (C)2001-2099 Comsenz Inc.
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* This is NOT a freeware, use is subject to license terms
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*
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* $Id: lib_tree.php 23684 2011-08-04 02:24:59Z cnteacher $
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*/
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if (!defined('IN_DISCUZ')) {
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exit('Access Denied');
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}
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class lib_tree {
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public $data = array();
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public $child = array(-1 => array());
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public $layer = array(-1 => -1);
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public $parent = array();
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public $countid = 0;
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public function __construct() {
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}
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public function setNode($id, $parent, $value) {
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$parent = $parent ? $parent : 0;
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$this->data[$id] = $value;
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$this->child[$parent][] = $id;
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$this->parent[$id] = $parent;
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if (!isset($this->layer[$parent])) {
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$this->layer[$id] = 0;
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} else {
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$this->layer[$id] = $this->layer[$parent] + 1;
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}
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}
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public function getList(&$tree, $root= 0) {
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foreach ($this->child[$root] as $key => $id) {
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$tree[] = $id;
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if ($this->child[$id])
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$this->getList($tree, $id);
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}
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}
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public function getValue($id) {
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return $this->data[$id];
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}
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public function reSetLayer($id) {
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if ($this->parent[$id]) {
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$this->layer[$this->countid] = $this->layer[$this->countid] + 1;
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$this->reSetLayer($this->parent[$id]);
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}
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}
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public function getLayer($id, $space = false) {
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$this->layer[$id] = 0;
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$this->countid = $id;
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$this->reSetLayer($id);
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return $space ? str_repeat($space, $this->layer[$id]) : $this->layer[$id];
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}
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public function getParent($id) {
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return $this->parent[$id];
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}
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public function getParents($id) {
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while ($this->parent[$id] != -1) {
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$id = $parent[$this->layer[$id]] = $this->parent[$id];
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}
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ksort($parent);
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reset($parent);
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return $parent;
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}
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public function getChild($id) {
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return $this->child[$id];
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}
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public function getChilds($id = 0) {
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$child = array();
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$this->getList($child, $id);
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return $child;
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}
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}
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?>
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