如何在WAMP服务器上运行的Wordpress中加载自定义模板文件？

function custom_template_register() {
    $template_name = 'Custom Template'; // 自定义模板的名称
    $template_slug = 'template-custom'; // 自定义模板的唯一标识符

    $template_path = get_stylesheet_directory() . '/template-custom.php'; // 自定义模板文件的路径

    $template_data = array(
        'name' => $template_name,
        'template' => $template_path
    );

    // 注册自定义模板
    wp_cache_delete( 'themes', 'themes' );
    wp_cache_delete( 'theme', 'themes' );
    wp_cache_delete( 'theme_mods_' . get_option( 'stylesheet' ), 'themes' );
    wp_cache_delete( 'current_theme', 'themes' );
    wp_cache_delete( 'custom_css_post_id', 'themes' );
    wp_cache_delete( 'theme_roots', 'themes' );
    wp_cache_delete( 'allowedthemes', 'themes' );
    wp_cache_delete( 'safecss', 'themes' );
    wp_cache_delete( 'theme_mods', 'themes' );
    wp_cache_delete( 'sidebars_widgets', 'themes' );

    wp_cache_set( 'last_changed', microtime(), 'themes' );

    wp_cache_set( 'template_' . $template_slug, $template_data, 'themes', 1800 );
}

add_action( 'after_switch_theme', 'custom_template_register' );