问题描述：
Deprecated: Methods with the same name as their class will not be constructors in a future version of PHP; Tree has a deprecated constructor in D:\software\phpEnv\www\localhost\Tree.php on line 2
php代码：
<?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idforeach($this->cateArray as $child=>$parent){
//检查是否有相等的IDif($parent==$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");
$tree->getAll();
foreach($tree->res as $val){
echo $val."<br>";
}
?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN""http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head><meta http-equiv="Content-Type" content="text/html; charset=utf-8" /><title>生成Tree</title>
</head>
<body>
<h5>生成标签测试</5>
<select><?phpforeach($tree->res as $key=>$val){
echo "<option value='{
$key}'>{
$val}</option>";}?>
</select>
</body>
</html>
原因分析：
php7.0之后将不再支持与类名相同的构造方法，构造方法统一使用 __construct()。
解决方案：
将
function Tree(){
}
修改为：
function __construct(){
}
运行效果：
参考文章链接：
- https://www.jb51.net/article/70162.htm