<?php
class coach
{
    public $master = "老张";
    protected $lover = "丁大锅";
    private $lovegame = "SM";
    public function slogan()
    {
        echo "吼吼~哈哈~"."\n";
    }
}

class cpc extends coach
{
    public function __construct()
    {
        //$this->master = $master;
        echo "我的师父是".$this->master."__我爱".$this->lover."__喜欢玩"."\n";  #说明public protected属性都可以由父类继承过来
    }
    public function self_introduce($name,$age)
    {

        echo "hello~my name is ".$name."今年芳龄".$age."\n";
    }
}
$cpc = new cpc();
$cpc->slogan();
$cpc->self_introduce('陈培昌',21);
echo $cpc->master;#说明public属性可以由外部访问（也就是实例化对象可以直接访问）
?>

<?php

class mycoach

{

    public $name="陈培昌";

    private $favorite = "喜欢丁大锅";

    public function __construct()

    {

        echo $this->name.$this->favorite.PHP_EOL;

    }

    public function __get($key)

    {

        return $this->$key;

    }

    public function __set($key,$value)

    {

        $this->$key = $value;

    }

}

$cpc = new mycoach();

echo "通过魔术方法__get获取到的favorite属性".$cpc->favorite.PHP_EOL;

$cpc->favorite="丁大锅送的手表";

echo "通过魔术方法__set设置后的favorite属性".($cpc->favorite).PHP_EOL;

?>