自动加载案例，访问

<?php 

class Company{

public $name;//公共的；

protected $position;//受保护的,可以再子类调用

private $salary;//私有的,只能在类内调用;

public function __construct($name,$position,$salary)

{

$this->name=$name;

$this->position=$position;

$this->salary=$salary;

}

public function GetPosition(){

return $this->position;

}

public function GetSalary(){

$res = $this->salary;

if ($this->name == '杨俊杰') {

echo '这个人太厉害了,你这个渣渣不配查看他的工资';

}else{

return $res;

}

}

}

<?php 

spl_autoload_register(function($className){

require __DIR__.'\public\\'.$className.'.php';

});

$Company = new Company('杨俊杰','总经理',50000);

// echo '我是受保护的属性值----》'.$Company->GetPosition();//调用受保护的属性

// echo $Company->GetSalary();调用私有的属性

 ?>