PHP
发布时间：2019-11-18 发布网站：大佬教程 code.js-code.com
大佬教程收集整理的这篇文章主要介绍了php 无限分类的树类代码，大佬教程大佬觉得挺不错的，现在分享给大家，也给大家做个参考。
<div class="codetitle"><a style="cursOR: pointer" data="55340" class="copybut" id="copybut55340" onclick="doCopy('code55340')"> 代码如下:
<div class="codebody" id="code55340">
<?
php /*
by lenush;
/
class Tree
{ var $data = array(
); var $child = array(-1=>array()
); var $layer = array(-1=>-1
); var $parent = array(
); function Tree ($
value) { $this->setNode(0,-1,$
value);
} // end func 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 function getList (&$tree,$root= 0)
{ foreach ($this->child[$root] as $key=>$id)
{ $tree[] = $id; if ($this->child[$id]) $this->getList($tree,$id
); }
} // end func
function getValue ($id)
{ return $this->data[$id];
} // end func
function getLayer ($id,$space =
fals
E) { return $space?str_repeat($space,$this->layer[$id]):$this->layer[$id];
} // end func function getParent ($id)
{ return $this->parent[$id];
} // end func function getParents ($id)
{ while ($this->parent[$id]
!= -1)
{ $id = $parent[$this->layer[$id]] = $this->parent[$id];
} ksort($parent
); reset($parent
); return $parent;
} // end func function getChild ($id)
{ return $this->child[$id];
} // end func function getChilds ($id = 0)
{ $child = array($id
); $this->getList($child,$id
); return $child;
} // end func
} // end class
//new Tree(根目录的名字
); //根目录的ID自动分配为0
$Tree = new Tree('目录导航'
); //setNode(目录ID,上级ID，目录名字
); $Tree->setNode(1,'目录1'
); $Tree->setNode(2,1,'目录2'
); $Tree->setNode(3,'目录3'
); $Tree->setNode(4,3,'目录3.1'
); $Tree->setNode(5,'目录3.2'
); $Tree->setNode(6,'目录3.3'
); $Tree->setNode(7,2,'目录2.1'
); $Tree->setNode(8,'目录2.2'
); $Tree->setNode(9,'目录2.3'
); $Tree->setNode(10,6,'目录3.3.1'
); $Tree->setNode(11,'目录3.3.2'
); $Tree->setNode(12,'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)."
\n";
}
?>
