@329s CommonFun::recursionMkDir($dirname); 这个可以用Yii 自带的FileHelper::createDirectory($dirname)

给你个创建excel的方法， 肯定好用

public static function createExcel(PHPExcel $objPHPExcel = NULL,$fileName = 'example.xlsx',$download = false)
{
    $objPHPExcel = $objPHPExcel ? $objPHPExcel : new PHPExcel;
    $objWriter = PHPExcel_IOFactory::createWriter($objPHPExcel, 'Excel2007');
    if($download){
        $fileName = basename($fileName);
        $fileName = iconv("utf-8", "gb2312", $fileName);
        header('Content-Type: application/vnd.ms-excel');
        header('Content-Disposition: attachment;filename='.$fileName);
        header('Cache-Control: max-age=0');
        $objWriter->save('php://output'); //文件通过浏览器下载
    }else{
        $dirname = dirname($fileName);
        if ($dirname != '.') {
            //文件路径如果不存在则递归创健
            CommonFun::recursionMkDir($dirname);
        }
        $objWriter->save($fileName); //脚本方式运行，保存在指定目录
        if(!file_exists($fileName)) {
            return false;
        }
        return true;
    }
}

self::createExcel($objPHPExcel,$fileName);