PHP rdkafka。如何消费匹配正则表达式的主题？

$conf = new RdKafka\Conf();
$conf->set('group.id', 'your_consumer_group_id');
$consumer = new RdKafka\KafkaConsumer($conf);

$topicConf = new RdKafka\TopicConf();
$topicConf->set('auto.offset.reset', 'earliest');
$topicConf->set('topic.regex.pattern', 'your_regex_pattern');
$consumer->subscribeRegex('your_regex_pattern', $topicConf);

while (true) {
    $message = $consumer->consume(120 * 1000); // 设置超时时间
    switch ($message->err) {
        case RD_KAFKA_RESP_ERR_NO_ERROR:
            // 处理消息
            echo $message->payload;
            break;
        case RD_KAFKA_RESP_ERR__PARTITION_EOF:
            // 分区末尾
            break;
        case RD_KAFKA_RESP_ERR__TIMED_OUT:
            // 超时
            break;
        default:
            // 错误处理
            echo $message->errstr(), "\n";
            break;
    }
}