Comment Author IP Logging

This snippet logs the IP address of comment authors, which can be useful for moderation and spam prevention.

PHP

function log_comment_author_ip($comment_id) {
    $comment = get_comment($comment_id);
    if (!$comment->user_id) {
        $ip_address = $_SERVER['REMOTE_ADDR'];
        add_comment_meta($comment_id, 'author_ip', $ip_address);
    }
}
add_action('comment_post', 'log_comment_author_ip');