14     require_once 
'system/classes/language.php';
 
   18     $language->init(
$db, 
"frontend");
 
   20     $lang = (array) $language->lang;
 
   22     $lang = language::inject(
$lang, 
'system/widgets/booking/language/');
 
   28     require_once (
'classes/booking.php');
 
Mysqli database class; returns db connection object.
 
The language class - support multilingual backend.