尝试在函数中使用以下代码。您的php文件child theme 主题

function add_comment_on_post_update( $post_id, $post_after, $post_before ) {

    // If this is just a revision, don\'t send the email.
    if ( wp_is_post_revision( $post_id ) )
        return;
    if (defined(\'DOING_AUTOSAVE\') && DOING_AUTOSAVE)
        return;
    if (isset($post_before->post_status) && \'auto-draft\' == $post_before->post_status) {
        return;
    }

    if (\'post\' == $_POST[\'post_type\']) {
        $current_user = wp_get_current_user();
        $comment = \'Edited by \'.$current_user->user_login;

        $time = current_time(\'mysql\');

        $data = array(
            \'comment_post_ID\' => $post_id,
            \'comment_author\' => \'admin\',
            \'comment_author_email\' => \'[email protected]\',
            \'comment_author_url\' => \'http://www.xyz.com\',
            \'comment_content\' => $comment,
            \'user_id\' => $current_user->ID,
            \'comment_date\' => $time,
            \'comment_approved\' => 1,
            \'comment_type\' => \'custom-comment-class\'
        );
        wp_insert_comment($data);
    }

}
add_action( \'post_updated\', \'add_comment_on_post_update\', 10 , 3 );