php面向对象self和parent的区别

<?php

class Par{//父类

    public static $name = ‘小红漂亮‘;
    const TITLE = ‘阿里巴巴‘;
}

class Chi extends Par //子类
{
    public static $name = ‘小黄最帅‘;//子类静态属性
    const TITLE = ‘刘强东|京东‘;//子类常量
    public function demo()
    {
        $str = ‘自己的静态属性:‘.self::$name;
        $str .= ‘<br>父类的静态属性:‘.parent::$name;
        $str .= ‘<br>自己的常量强东:‘.self::TITLE;
        $str .= ‘<br>父类的常量阿里:‘.parent::TITLE;
        echo $str;
    }
}

$obj =  new Chi();
$obj->demo();