RSForm Pro generate dropdown items from DB - title from given category

rsform-dropdown-items-from-db

//<code>
  use Joomla\CMS\Factory;
  
  $catid = 345; // fake cat id
  $items = array();
  $items[] ="|Select";
  
  $db    = Factory::getDbo();
  $query = $db->getQuery(true);
  $query->select($db->quoteName(array('id','title)));
  $query->from($db->quoteName('#__content'));
  $query->where($db->quoteName('catid') . " = " . $db->quote($catid));

  $db->setQuery($query);
	$results = $db->loadObjectList();
  
  foreach ($results as $result) {
   $value = $result->id;
   $label = $result->title;
   $items[] = $value.'|'.$label;
  }
  
  $items = implode("\n", $items);
  return $items;
//</code>