private function content_field_query($controller, $format, $params) { if (isset($params['id'])) { $table = $controller; $column = $controller . $format; $where = "contentid"; $field = array($params['id']); //build single query from BuildQuery class $db_results = BuildQuery::single_field_query($table, $column, $where, $field); $db_result = $db_results[$column]; self::$db_content_field = $db_result; } }