prova cosi

Codice PHP:
$user =& JFactory::getUser();
$uid $user->id;
$db_user=&JFactory::getDBO();
        
$query_user 'SELECT crediti FROM #__users WHERE id = '.$uid;
        
$db_user->setQuery$query_user);
        
$db_user->query();
        
$n_crediti $db_user->loadResult(); 
puoi stampa la variabile $n_crediti.