PHP의 객체지향

/**
 * 定义类，继承AnotherClass
 */
 class MyClass extends AnotherClass
 {
 	
 	function __construct(argument)
 	{
 # code...
 	}
 }

 $user = new User("愤怒的小水滴", 16);
 echo $user->name."<br>".$user->age;

class Student extends User
{
    /* 构造函数 */
    public function __construct($name, $age, $school)
    {
        parent::__construct($name, $age);
    }
    /* 析构函数 */
    public function __destruct()
    {
        parent::__destruct();
    }
}

 $student = new Student("愤怒的小水滴", 16, 'hebei');
 echo json_encode($student)."<br>";