public static function write($session_id, $data) { // encryption $crypt = new Crypt(); $data = $crypt->encrypt($data); $sessions = new Sessions(); $sessions->session_id = $session_id; $sessions->data = $data; $s = $sessions->where("session_id = ?", $session_id)->find(); if (is_null($s)) { return $sessions->save(); } $sessions->id = $s->id; return $sessions->update(); }