<?php

class Student{

    var $name;

    var $age;

    var $sex;

    function __construct(){    //可以从输出中看得出来，我们并没有输出这个方法，但是他自动输出了。这个就是构造方法的作用，会自动的被调用！

        echo "520PHP<br />";

    }

    function study(){

        echo "学习中，请稍后！";

    }

}

    $daniu = new Student;

    $daniu -> name="大牛梦！";

    echo $daniu->name;

 ?>

<?php

/**

*

*/

class Student

{

    var $name;

    var $sex;

    var $age;

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

    {

        $this->name=$name;

        $this->sex=$sex;

        $this->age=$age;

    }

    function say(){

        echo "我叫：".$this->name."我是一个".$this->sex."生"."我今年".$this->age."岁了<br>";

    }

    function __destruct(){

        echo $this->name;

    }

}

    $zhangsan=new Student("张三","男",);

    $lisi =new Student("李四","男",);

    $wangwu=new Student("王五","男",);

    $zhangsan->say();

    $lisi->say();

    $wangwu->say();

 ?>