juziaixiao的博客

composer下载就不说了 安装了composer 打开cmd 运行composer 有没有安装上composer 输入composer -v 切换到项目目录 composer下载 composer require phpoffice/phpspreadsheet <?php namespace frontend\controllers; use Yii; use yii\web\Controller; use PhpOffice\PhpSpreadsheet\Spreadsheet;