apply_filters( 'comment_class', string[] $classes, string[] $css_class, string $comment_id, WP_Comment $comment, int|WP_Post $post )

Parameters

$classes

(string[]) An array of comment classes.

$css_class

(string[]) An array of additional classes added to the list.

$comment_id

(string) The comment ID as a numeric string.

$comment

(WP_Comment) The comment object.

$post

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