Elgg\Http\DatabaseSessionHandler::read PHP Method

    public function read($session_id)
    {
        $id = sanitize_string($session_id);
        $query = "SELECT * FROM {$this->db->prefix}users_sessions WHERE session='{$id}'";
        $result = $this->db->getDataRow($query);
        if ($result) {
            return (string) $result->data;
        } else {
            return false;
        }
    }