Deprecated: Methods with the same name as their class will not be constructors in a future version

浅浅的花香味﹌ 2022-12-11 09:29 149阅读 0赞

# 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");
    $tree->getAll();
    foreach($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>

--------------------

# 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：**  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3VzZXJuYW1lNjY2_size_16_color_FFFFFF_t_70_pic_center]

**参考文章链接：**

*  [https://www.jb51.net/article/70162.htm][https_www.jb51.net_article_70162.htm]

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3VzZXJuYW1lNjY2_size_16_color_FFFFFF_t_70_pic_center]: /images/20221123/72ead476a53b4e81b7be07b8469ce83b.png
[https_www.jb51.net_article_70162.htm]: https://www.jb51.net/article/70162.htm