最后，我将使用Multisite Cloner. 这不受支持，但工作正常。

我自动化了https://wordpress.org/plugins/blog-copier/ 来解决这个问题。如果您只想手动执行，请使用此插件，否则，这是我的自动版本：

include "BlogCopierExtended.php";

add_action("wpmu_activate_blog", "blog_copy",15,3);

function blog_copy($blog_id)
{

    //  first I save the options I want to preserve
    $customer_name = get_blog_option($blog_id, "customer_name");

    // get the customized class
    $blog_copier = new BlogCopierExtended();

    // the default blog, from where to copy the data from
    $default_blog = get_id_from_blogname( "default" );

    // copy this
    $copy_now = $blog_copier->copy_blog_to_existing($blog_id, "", "", $default_blog, true);

    // now we save the values back
    update_blog_option($blog_id, "customer_name", $customer_name);

}

if (class_exists(\'BlogCopier\')) {
    class BlogCopierExtended extends BlogCopier

    {
        public function copy_blog_to_existing($blog_id, $domain, $title, $from_blog_id = 0, $copy_files = true)
        {
            global $wpdb, $current_site, $base;
            $email = get_blog_option($from_blog_id, \'admin_email\');
            $user_id = email_exists(sanitize_email($email));
            if (!$user_id) {

                // Use current user instead

                $user_id = get_current_user_id();
            }

            // The user id of the user that will become the blog admin of the new blog.

            $user_id = apply_filters(\'copy_blog_user_id\', $user_id, $from_blog_id);
            if (is_subdomain_install()) {
                $newdomain = $domain . "." . $current_site->domain;
                $path = $base;
            }
            else {
                $newdomain = $current_site->domain;
                $path = trailingslashit($base) . trailingslashit($domain);
            }

            // The new domain that will be created for the destination blog.

            $newdomain = apply_filters(\'copy_blog_domain\', $newdomain, $domain);

            // The new path that will be created for the destination blog.

            $path = apply_filters(\'copy_blog_path\', $path, $domain);
            $wpdb->hide_errors();

            // $to_blog_id = get_current_blog_id();

            $to_blog_id = $blog_id;
            $wpdb->show_errors();
            if (!is_wp_error($to_blog_id)) {
                $dashboard_blog = get_dashboard_blog();
                if (!is_super_admin() && get_user_option(\'primary_blog\', $user_id) == $dashboard_blog->blog_id) update_user_option($user_id, \'primary_blog\', $to_blog_id, true);

                // now copy

                if ($from_blog_id) {
                    $this->copy_blog_data($from_blog_id, $to_blog_id);
                    if ($copy_files) {
                        $this->copy_blog_files($from_blog_id, $to_blog_id);
                        $this->replace_content_urls($from_blog_id, $to_blog_id);
                    }

                    $msg = sprintf(__(\'Copied: %s in %s seconds\', $this->_domain) , \'<a href="http://\' . $newdomain . \'" target="_blank">\' . $title . \'</a>\', number_format_i18n(timer_stop()));

                    // do_action( \'log\', __( \'Copy Complete!\', $this->_domain ), $this->_domain, $msg );
                    //                  do_action( \'copy_blog_complete\', $from_blog_id, $to_blog_id );

                }
            }
            else {
                $msg = $to_blog_id->get_error_message();
            }

            return $msg;
        }
    }
}