Some folks like to hide the 'meat' of their wp-config files

Add obscurity

include('/var/www/vhosts/domain.com/filename.php');

/** WordPress likes the language defined here */
define ('WPLANG', '');
/** Absolute path to the WordPress directory. */
if ( !defined('ABSPATH') )
        define('ABSPATH', dirname(__FILE__) . '/');

/** Sets up WordPress vars and included files. */
require_once(ABSPATH . 'wp-settings.php');