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

User Contributed Notes

1. Skip to note 2 content

   Noruzzaman 1 year ago

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   we will walk through how to use apply_filters with comment_class to customize the CSS classes for comments in WordPress.

   Examples One

   function wpdocs_comment_class_filter1( $classes, $class, $comment_id, $comment ) {
       // For example, add a custom class to comments by the post author
       if ( $comment->user_id === $post->post_author ) {
           $classes[] = 'comment-by-post-author';
       }
       return $classes;
   }
   add_filter( 'comment_class', 'wpdocs_comment_class_filter1', 10, 4 );

   Examples Two

   function wpdocs_comment_class_filter2( $classes, $class, $comment_id, $comment ) {
       // Add a custom class to comments by users with a specific email domain
       if ( strpos( $comment->comment_author_email, '@example.com' ) !== false ) {
           $classes[] = 'comment-by-example-domain';
       }
       return $classes;
   }
   
   add_filter( 'comment_class', 'wpdocs_comment_class_filter2', 10, 4 );