ManaPHP\Authentication\Token\Adapter\Mwt::decode PHP Метод

    public function decode($str)
    {
        $parts = explode('.', strtr($str, '-_', '+/'));
        if (count($parts) !== 3) {
            throw new MwtException('`:token` is not contain 3 parts', ['token' => $str]);
        }
        $type = $parts[0];
        $payload = $parts[1];
        /** @noinspection MultiAssignmentUsageInspection */
        $hash = $parts[2];
        $success = false;
        foreach ($this->_keys as $key) {
            if (rtrim(base64_encode(md5($type . $payload . $key, true)), '=') === $hash) {
                $success = true;
                break;
            }
        }
        if (!$success) {
            throw new MwtException('hash is not corrected: :hash', ['hash' => $hash]);
        }
        /** @noinspection TypeUnsafeComparisonInspection */
        if ($type != $this->_type) {
            throw new MwtException('type is not correct: :type', ['type' => $type]);
        }
        $data = json_decode(base64_decode($payload), true);
        if (!is_array($data)) {
            throw new MwtException('payload is not array.');
        }
        if (!isset($data['EXP']) || time() > $data['EXP']) {
            throw new MwtException('token is expired.', Exception::CODE_EXPIRE);
        }
        foreach ($this->_fields as $k => $v) {
            $this->{is_int($k) ? $v : $k} = $data[$v];
        }
        return $this;
    }