function my_custom_enqueue_scripts() {
        if ($handle = opendir(get_template_directory() . \'/custom-stylesheets\')) {
            $i = 1;
            while (false !== ($file = readdir($handle))) {
                if ($file != "." && $file != "..") {
                    wp_register_style(\'custom_stylesheets_\' . $i, get_template_directory_uri() . \'/custom-stylesheets/\' . $file);
                    $i++;
                }
            }
            closedir($handle);
        }
    }

add_action(\'wp_enqueue_scripts\', \'my_custom_enqueue_scripts\');

样式应位于：you\\u主题/自定义样式表/