Answers for "codeigniter how to get last id"

codeigniter return last inserted id

$this->db->insert('posts', $post_data);
   $insert_id = $this->db->insert_id();
   return  $insert_id;

how to get last id in database codeigniter 4

$db = db_connect();
  $query = $db->query("SELECT * FROM users ORDER BY id DESC LIMIT 1");
  $result = $query->getRow();