Ny til php klasser - vudering?

PHP kode 

 <?php
 class MySqlDriver 
 {
     private $_serverLink;
     private $_databaseLink;
 
     public function MySqlDriver($server, $username, $password, $database) 
     {
         $this->_serverLink = mysql_connect($server, $username, $password);
         
         if (!$this->_serverLink)
         {
             die("Fejl server");
         }
         
         $this->_databaseLink = mysql_select_db($database, $this->_serverLink);
         
         if (!$this->_databaseLink)
         {
             die("Fejl database");
         }
         
         echo "Yep det virker";
     }
     
     public function __destruct() 
     {
         mysql_close($this->_serverLink);
     }
 }
 
 $connection = new MySqlDriver("xxx", "xxx", "xxx", "xxx");
 
 ?>