For running J!5.1 you must https://fabrikar.com/forums/index.php?wiki/update-from-github/ or include the new file manually https://fabrikar.com/forums/index.php?threads/joomla-5-1-and-fabrik-cannot-find-files-error.54473/post-285151 See also Announcements
Please see our announcement here.
$db = JFactory::getDBO();
$db->setQuery("SELECT id FROM table_name WHERE status = 1 ORDER BY `id` DESC LIMIT 5");
$db = $db->loadObjectList();
foreach ($db as $row)
{
$arr_id[$row->id] = $row->id;
}
$arr_id = implode(",",$arr_id);
return $arr_id;