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超轻量级php框架startmvc

PHP生成树的方法

更新时间:2020-03-05 11:02:35 作者:startmvc
本文实例讲述了PHP生成树的方法。分享给大家供大家参考。具体如下:这个类不是我写的只

本文实例讲述了PHP生成树的方法。分享给大家供大家参考。具体如下:

这个类不是我写的 只添加了getAll()函数 php生成一个树,可以用于产品分类 不知道遍历写的是否优化,如果你有请分享一下吧 -.-!

运行效果如下图所示:

实现代码如下:


<?php
class Tree
{
 public $data=array();
 public $cateArray=array();
 public $res=array();
 function Tree()
 {
 }
 function setNode ($id, $parent, $value)
 {
 $parent = $parent?$parent:0;
 $this->data[$id] = $value;
 //print_r($this->data);
 //echo "\r\n";
 $this->cateArray[$id] = $parent; //节点数组
 //print_r($this->cateArray);
 }
 function getChildsTree($id=0)
 {
 $childs=array();
 foreach ($this->cateArray as $child=>$parent)
 {
 if ($parent==$id)
 {
 $childs[$child]=$this->getChildsTree($child);
 }
 }
 print_r($childs)."/r/n";
 return $childs;
 }
 function getParentsTree($id=0)
 {
 $parents=array();
 foreach ($this->cateArray as $child=>$parent)
 {
 if ($child ==$id)
 {
 $parents[$parent]=$this->getParentsTree($parent);
 }
 }
 print_r($parents)."/r/n";
 return $parents;
 }
 function getChilds($id=0)
 {
 $childArray=array();
 $childs=$this->getChild($id);
 foreach ($childs as $child)
 {
 $childArray[]=$child;
 $childArray=array_merge($childArray,$this->getChilds($child));
 }
 return $childArray;
 }
 function getChild($id)
 {
 $childs=array();
 foreach ($this->cateArray as $child=>$parent)
 {
 if ($parent==$id)
 {
 $childs[$child]=$child;
 }
 }
 return $childs;
 }
 function getParents($id)
 {
 $parentArray=array();
 $parents=$this->getParent($id);
 foreach ($parents as $parent)
 {
 $parentArray[]=$parent;
 $parentArray=array_merge($parentArray,$this->getParents($parent));
 }
 return $parentArray;
 }
 function getParent($id)
 {
 $parents=array();
 foreach ($this->cateArray as $child=>$parent)
 {
 if ($child==$id)
 {
 $parents[$parent]=$parent;
 }
 }
 return $parents;
 }
 //单线获取父节点
 function getNodeLever($id)
 {
 $parents=array();
 if (key_exists($this->cateArray[$id],$this->cateArray))
 {
 $parents[]=$this->cateArray[$id];
 $parents=array_merge($parents,$this->getNodeLever($this->cateArray[$id]));
 }
 return $parents;
 }
 function getLayer($id,$preStr='|-')
 {
 return str_repeat($preStr,count($this->getNodeLever($id)));
 }
 function getValue ($id)
 {
 return $this->data[$id];
 } // end func
 //获取所有节点数据生成树
 function getAll($id=0,$str="|-"){
 if($id!=0){
 $str=$str."|-";
 }
 //遍历所有数组检查parent是否有id
 foreach($this->cateArray as $child=>$parent){
 //检查是否有相等的ID
 if($parent==$id){
 $this->res[$child]=$str.$this->getValue($child);
 $this->getAll($child,$str);
 }
 //$this->res[$child]=$child.$str.$this->getValue($child);
 }
 }
}
//构造树
//setNode ($id, $parent, $value)
$tree = new Tree();
$tree->setNode("1","","电器");
$tree->setNode("2","","服装");
$tree->setNode("3","1","电脑");
$tree->setNode("4","1","家电");
$tree->setNode("5","2","男装");
$tree->setNode("6","2","女装");
$tree->setNode("7","3","笔记本");
$tree->setNode("8","3","台式机");
$tree->setNode("9","7","惠普");
$tree->setNode("10","7","戴尔");
$tree->setNode("11","8","火星人");
$tree->setNode("12","5","西装");
$tree->setNode("13","6","上衣");
$tree->setNode("14","9","惠普-N90");
$tree->setNode("15","9","惠普-N91");
$tree->setNode("16","10","戴尔A11");
$tree->setNode("17","10","戴尔A12");
$tree->setNode("18","10","戴尔A13");
$tree->setNode("19","6","裤子 ");
$tree->setNode("20","13","长袖");
$tree->setNode("21","13","短袖");
$tree->setNode("22","20","NIKE长袖");
$tree->setNode("23","20","361长袖");
$tree->setNode("24","22","NIKE长袖-均码");
$tree->setNode("25","22","NIKE长袖-短码");
$tree->setNode("26","14","惠普-N90-14寸");
$tree->setNode("27","14","惠普-N90-15寸");
$tree->setNode("28","14","惠普-N90-17寸");
$tree->setNode("29","28","惠普-N90-17寸-高性能企业版");
$tree->setNode("30","28","惠普-N90-17寸-普通家用版");
//获取一个节点的所有父节点
//print_r ($tree->getNodeLever(12));
//print_r ($tree->getParentsTree(12));
//$childs = $tree->getChildsTree(1);
//print_r($childs);
//echo "/r/n/r/n/r/n/r/n";
/*
foreach($childs as $key=>$value){
 echo $key."<br>";
 //echo $tree->getLayer($key).$tree->getValue($key)."<br>";
}
*/
$tree->getAll();
foreach($tree->res as $val){
 echo $val."<br>";
}
?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>生成Tree</title>
</head>
<body>
<h5>生成标签测试</5>
<select>
<?php
 foreach($tree->res as $key=>$val){
 echo "<option value='{$key}'>{$val}</option>";
 }
?>
</select>
</body>
</html>

希望本文所述对大家的php程序设计有所帮助。

PHP 生成树