PHP无限分类的类
这段时间在写一个部门权限系统,需要用到无限分类技术,找了很多关于分类的代码.逐个收藏起来
<?php /** * @author YangHuan * @datetime * @version 1.0.0 *//** * Short description. * * Detail description * @author * @version 1.0 * @copyright * @access public */ class Tree { /** * Description * @var * @since 1.0 * @access private */ var $data = array(); /** * Description * @var * @since 1.0 * @access private */ var $child = array(-1=>array()); /** * Description * @var * @since 1.0 * @access private */ var $layer = array(-1=>-1); /** * Description * @var * @since 1.0 * @access private */ var $parent = array();
/** * Short description. * * Detail description * @param none * @global none * @since 1.0 * @access private * @return void * @update date time */ function Tree ($value) { $this->setNode(0, -1, $value); } // end func
/** * Short description. * * Detail description * @param none * @global none * @since 1.0 * @access private * @return void * @update date time */ function setNode ($id, $parent, $value) { $parent = $parent?$parent:0;
$this->data[$id] = $value; $this->child[$id] = array(); $this->child[$parent][] = $id; $this->parent[$id] = $parent;
if (!isset($this->layer[$parent])) { $this->layer[$id] = 0; } else { $this->layer[$id] = $this->layer[$parent] + 1; } } // end func /** * Short description. * * Detail description * @param none * @global none * @since 1.0 * @access private * @return void * @update date time */ function getList (&$tree, $root= 0) { foreach ($this->child[$root] as $key=>$id) { $tree[] = $id;
if ($this->child[$id]) $this->getList($tree, $id); } } // end func
/** * Short description. * * Detail description * @param none * @global none * @since 1.0 * @access private * @return void * @update date time */ function getValue ($id) { return $this->data[$id]; } // end func
/** * Short description. * * Detail description * @param none * @global none * @since 1.0 * @access private * @return void * @update date time */ function getLayer ($id, $space = false) { return $space?str_repeat($space, $this->layer[$id]):$this->layer[$id]; } // end func
/** * Short description. * * Detail description * @param none * @global none * @since 1.0 * @access private * @return void * @update date time */ function getParent ($id) { return $this->parent[$id]; } // end func /** * Short description. * * Detail description * @param none * @global none * @since 1.0 * @access private * @return void * @update date time */ function getParents ($id) { while ($this->parent[$id] != -1) { $id = $parent[$this->layer[$id]] = $this->parent[$id]; }
ksort($parent); reset($parent);
return $parent; } // end func /** * Short description. * * Detail description * @param none * @global none * @since 1.0 * @access private * @return void * @update date time */ function getChild ($id) { return $this->child[$id]; } // end func
/** * Short description. * * Detail description * @param none * @global none * @since 1.0 * @access private * @return void * @update date time */ function getChilds ($id = 0) { $child = array($id); $this->getList($child, $id);
return $child; } // end func } // end class
?>
使用方法
PHP代码:
<?php //new Tree(根目录的名字); //根目录的ID自动分配为0 $Tree = new Tree('根目录');//setNode(目录ID,上级ID,目录名字); $Tree->setNode(1, 0, '目录1'); $Tree->setNode(2, 0, '目录2'); $Tree->setNode(3, 0, '目录3'); $Tree->setNode(4, 3, '目录3.1'); $Tree->setNode(5, 3, '目录3.2'); $Tree->setNode(6, 3, '目录3.3'); $Tree->setNode(7, 2, '目录2.1'); $Tree->setNode(8, 2, '目录2.2'); $Tree->setNode(9, 2, '目录2.3'); $Tree->setNode(10, 6, '目录3.3.1'); $Tree->setNode(11, 6, '目录3.3.2'); $Tree->setNode(12, 6, '目录3.3.3');
//getChilds(指定目录ID); //取得指定目录下级目录.如果没有指定目录就由根目录开始 $category = $Tree->getChilds();
//遍历输出 foreach ($category as $key=>$id) { echo $Tree->getLayer($id, '|-').$Tree->getValue($id)."<br>\n"; }
PHP无限分类-PHP100代码
<?php //无限分类,从子类找所有父类 //$id 子类ID function php100_xd($id){ $sql="select * from fl where id='$id'"; $q=mysql_query($sql); $rs=mysql_fetch_array($q); $rs['fid']==0 ? "" : fl($rs['fid']); echo $rs['name']."-"; } //读取所有父类下面的子类 //$f顶级分类从什么开始,$s样式 function php100_dx($f=0,$s=""){ $sql="select * from fl where fid=$f"; $q=mysql_query($sql); $s=$s."-"; while($rs=mysql_fetch_array($q)){ echo "<br>$s".$rs['name']; flt($rs['id'],$s); } }