PHP对象

<?php

class Person{
    public $name;
    public $age;
    public static $ss = "第一个";

    function __construct($name,$age){
        // TODO:实现构造函数（）方法
        $this->name=$name;
        $this->age=$age;
    }

    function say(){                        //  公有
        echo "名字:" . $this->name . "\n";
        echo "年龄:" . $this->age . "\n";
        echo "性别:" . $this->xingB() . "\n";
        echo "学校:" . $this->school() . "\n";
        echo self::$ss . "\n";
    }

    private function xingB(){            //  私有
        return "男生";
    }

    protected function school(){        //  受保护
        return "xu";
    }

    protected function play(){
        echo "12345  ";
    }

    function __destruct()
    {
        // TODO: Implement __destruct() method.
        // TODO:实现析构函数（）方法
        echo "父类  再见" . $this->name . "\n";
    }
}


class sonRen extends Person{

    function saySon(){
        echo "名字是" . $this->name . "\n";
        echo "年龄是" . $this->age . "\n";
        echo "性别是" . $this->xingB() . "\n";
        echo "学校是" . $this->school() . "\n";
    }

    public function xingB(){    //  子类私有方法在这里无法重写
        $nan = "女生";
        return $nan;
    }

    public function school(){  // 子类可以更改父类的受保护方法
        return "pt";
    }

    public function play()
    {
        parent::play(); // TODO: Change the autogenerated stub
                        // TODO:更改自动生成的存根
        echo "6789\n";
    }

    function __destruct()
    {
        // TODO: Implement __destruct() method.
        // TODO:实现析构函数（）方法
        echo "子类  拜拜" . $this->name . "\n";
    }
}


$r = new Person("san",18);    // 父类访问父类方法
print_r($r->say() . "\n");

$s = new sonRen("wu",20);     // 子类访问子类方法
print_r($s->saySon() . "\n");

print_r($s->play() . "\n");   // 子类访问父类

print_r($s->say(). "\n");     // 子类访问父类方法

PHP对象

原文：https://www.cnblogs.com/see-you-cu/p/12069478.html