您只需在保存评论之前检查输入的名称或电子邮件是否与任何管理员帐户匹配。

function restrict_admin_names() {
    if ( !is_user_logged_in() ) {
        $name = $_POST[\'author\']; // Get Submitted Name
        $email = $_POST[\'email\']; // Get Submitted Email
        $admins = get_super_admins(); // Get an array of admin login
        $adminemail[] = \'\'; // Create an empty array of admin emails
        $admindisplayname[] = \'\'; // Create an empty array of admin display names

            // Create an array of admin emails and display names
            foreach ($admins as $admin) {
                $userdata = get_user_by( \'login\', $admin );
                $adminemail[] = $userdata->user_email;
                $admindisplayname[] = $userdata->display_name;
            }


        if ( isset($name) && in_array( $name, $admins) && in_array( $name, $admindisplayname) ) {
            wp_die( __(\'Sorry, you can not use that name\', \'mytextdomain\' ) );
        }

        if ( isset($email) && in_array( $email, $adminemail) ) {
            wp_die( __(\'Sorry, you can not use that email\', \'mytextdomain\' ) );
        }
    }
}
add_action(\'pre_comment_on_post\', \'restrict_admin_names\');

不用说，这段代码进入了你的主题functions.php 文件