php树型类实例_php技巧
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2022-03-06 08:01:32
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本文实例讲述了php树型类。分享给大家供大家参考。具体分析如下:
该实例原理简单,学过数据结构的一看就明白是什么道理了,不过今天在使用时数据中出现了子节点id(71)小于父节点id(104).导致部分子节点没被存储入数组,修改了一下,实例代码如下:
复制代码 代码如下:
class tree
{
var $data = array();
var $child = array(-1=>array());
var $layer = array(-1=>-1);
var $parent = array();
var $num = array();
function setnode($id, $parent, $value,$num=0)
{
$parent = $parent ? $parent : 0;
$this->data[$id] = $value;
$this->num[$id] = $num;
if (!isset($this->child[$id])) $this->child[$id] = array();
$this->child[$parent][] = $id;
$this->parent[$id] = $parent;
if (!isset($this->layer[$parent]) && $parent == 0)
{
$this->layer[$id] = 0;
}
else
{
$this->layer[$id] = $this->layer[$parent] + 1;
}
}
function getlist(&$tree, $root= 0)
{
foreach ($this->child[$root] as $key=>$id)
{
$tree[] = $id;
if($this->child[$id]) $this->getlist($tree, $id);
}
}
function getvalue($id)
{
if($this->layer[$id]==0)
{
return $this->data[$id];
}
else
{
return $leftmar.$this->data[$id];
}
}
function getnum($id)
{
return $this->num[$id];
}
function getbitvalue($id)
{
return $this->data[$id];
}
function getlayer($id, $space = false)
{
return $space ? str_repeat($space, $this->layer[$id]) : $this->layer[$id];
}
function getparent($id)
{
return $this->parent[$id];
}
function getparents($id)
{
while ($this->parent[$id] != -1)
{
$id = $parent[$this->layer[$id]] = $this->parent[$id];
}
ksort($parent);
reset($parent);
return $parent;
}
function getchild($id)
{
return $this->child[$id];
}
function getchilds($id = 0)
{
$child = array($id);
$this->getlist($child, $id);
return $child;
}
function printdata()
{
return $this->layer;
}
}
?>
{
var $data = array();
var $child = array(-1=>array());
var $layer = array(-1=>-1);
var $parent = array();
var $num = array();
function setnode($id, $parent, $value,$num=0)
{
$parent = $parent ? $parent : 0;
$this->data[$id] = $value;
$this->num[$id] = $num;
if (!isset($this->child[$id])) $this->child[$id] = array();
$this->child[$parent][] = $id;
$this->parent[$id] = $parent;
if (!isset($this->layer[$parent]) && $parent == 0)
{
$this->layer[$id] = 0;
}
else
{
$this->layer[$id] = $this->layer[$parent] + 1;
}
}
function getlist(&$tree, $root= 0)
{
foreach ($this->child[$root] as $key=>$id)
{
$tree[] = $id;
if($this->child[$id]) $this->getlist($tree, $id);
}
}
function getvalue($id)
{
if($this->layer[$id]==0)
{
return $this->data[$id];
}
else
{
return $leftmar.$this->data[$id];
}
}
function getnum($id)
{
return $this->num[$id];
}
function getbitvalue($id)
{
return $this->data[$id];
}
function getlayer($id, $space = false)
{
return $space ? str_repeat($space, $this->layer[$id]) : $this->layer[$id];
}
function getparent($id)
{
return $this->parent[$id];
}
function getparents($id)
{
while ($this->parent[$id] != -1)
{
$id = $parent[$this->layer[$id]] = $this->parent[$id];
}
ksort($parent);
reset($parent);
return $parent;
}
function getchild($id)
{
return $this->child[$id];
}
function getchilds($id = 0)
{
$child = array($id);
$this->getlist($child, $id);
return $child;
}
function printdata()
{
return $this->layer;
}
}
?>
希望本文所述对大家的PHP程序设计有所帮助。