Help with registration script

Hello i've got a registration script on my site but when the user enters there info and clicks register button it should take them to a page called process.php that congratulates them on registering. When it goes to the page process.php i get this error,

Parse error: syntax error, unexpected T_STRING in /***/***/***/***/config.php on line 9

Here is the code for config.php where the error is occuring. I assure you all my database information is correct but if anyone can spot the problem that would be great.

<?php
class MySQLDB
{
   var $connection;         //The MySQL database connection

   /* Class constructor */
   function MySQLDB(){
      /* Make connection to database */
      $this->connection = @mysql_connect(localhost, ***, ***) or die(mysql_error());
      @mysql_select_db(***, $this->connection) or die(mysql_error());
    }
    /**
    * query - Performs the given query on the database and
    * returns the result, which may be false, true or a
    * resource identifier.
    */
    //Use this function as query("Query line of code");
   function query($query){
      return mysql_query($query, $this->connection);
   }
};

$config = new MySQLDB;
?> 

Code (markup):

Thanks.

 

You need to replace *** with your database connection details:
so instead of

      $this->connection = @mysql_connect(localhost, ***, ***) or die(mysql_error());

PHP:

you shoud have

      $this->connection = @mysql_connect('localhost', 'my_username', 'my_password') or die(mysql_error());

PHP: