How to sort comments on Redis?

Question

PHP

Good afternoon, I made the output of comments on the page through redis.
But they are displayed in a strange order. Let's say a user with id 1 and id 2
Each of them wrote 3 comments, the user with id 2 has comments below, for some reason, and vice versa for the other user. How to sort by the time the comment was added?

Here is the code for the model that retrieves the comments from the base

public function showComments()
    {
        /* @var $redis Connection */
        $redis = Yii::$app->redis;
        return $redis->smembers("post:{$this->getId()}:comments");
    }

And this is the display code

<span class="show-comments">
        <?php foreach ($post->showComments() as $comment): ?>
            <?php echo $comment; ?>
            <hr>
        <?php endforeach; ?></span>

Answer 1

Maybe you should try using ordered sets?