Extension Writers Discussion • Help to exclude locked forums from my sql

Code:

FROM ' . TOPICS_TABLE . ' tLEFT JOIN ' . FORUMS_TABLE . ' fON (t.forum_id = f.forum_id)WHERE ' . $this->db->sql_in_set('t.forum_id', array_keys($this->auth->acl_getf('f_read', true))) . 'AND ' . $this->content_visibility->get_visibility_sql('topic', 't.') . 'ORDER BY t.topic_last_post_time DESC';