apply_filters( 'comment_class', array $classes, string $class, int $comment_id, WP_Comment $comment, int|WP_Post $post_id )

Parameters

$classes

(array) An array of comment classes.

$class

(string) A comma-separated list of additional classes added to the list.

$comment_id

(int) The comment id.

$comment

(WP_Comment) The comment object.

$post_id

(int|WP_Post) The post ID or WP_Post object.