public static function get_news_ids4tags($tags) { if (!is_array($tags)) { $tags = (array) $tags; } if (!($tag_ids = \Model_Tag::get_ids4names($tags))) { return array(); } $objs = self::query()->where('tag_id', 'in', $tag_ids)->get(); return \Util_Orm::conv_col2array($objs, 'news_id'); }