class Score

{

    public $english;

    public $chinese;

    public $math;

    function __construct($english,$chinese,$math)

    {

        $this->chinese = $chinese;

        $this->english = $english;

        $this->math = $math;

    }

}

class Student

{

    public $name;

    public $age;

    public $Score;

    function __construct($name,$age,Score $Score)

    {

        $this->name = $name;

        $this->age = $age;

        $this->Score = $Score;  //对象

    }

    function show(){

        echo "我叫{$this->name}，今年{$this->age}岁了，

        数学：{$this->Score->math}，英语：{$this->Score->english}，

        语文：{$this->Score->chinese}。";

    }

}

include_once "Score.class.php";

include_once "Student.class.php";

$score = new Score(100,99,98);

$student = new Student("房明",18,$score);

$student->show();