php+mysql，面向对象，查询

class mysql{
public $host;
public $root;
public $password;
public $database;

    function __construct ($host,$root,$password){        $this->host     =$host;                                         $this->root     =$root;        $this->password =$password ;    }    function connect (){        @mysql_connect  ($this->host,$this->root,$this->password);        mysql_select_db ($this->database);        mysql_query     ("set names utf8");    }    function close(){        mysql_close();    }    function select(){        $result=mysql_query("select * from users");        print_r ($result);    }}    $link=new mysql("localhost","root","","stu_system");$link->connect();$link->select();$link->close();

?>
入手几天，用面向对象的，写到最后感觉我还是在面向过程写，怎么回事~~~
最后是网页不显示信息。
本人自学，能力有限~~求教呀~~