Problem with config.php file

[leealex]

If I create user 'leehost' on my server, the board connects to the DB though config.php contais this:

$config['database']['type'] = 'mysqli';
$config['database']['database'] = 'vitz';
$config['database']['table_prefix'] = 'mybb_';

$config['database']['hostname'] = 'localhost';
$config['database']['username'] = 'vitz';
$config['database']['password'] = '*******';


How is that possible?