phpspreadsheet做excel导入，乱码等解决方案

phpspreadsheet是目前比较流行的office处理包，api也非常简洁明了，使用也很方便，下面就简单讲讲如何导入。

官方文档：https://phpspreadsheet.readthedocs.io/en/latest/topics/reading-files/
安装：composer require phpoffice/phpspreadsheet

$path= iconv("UTF-8","GBK", $path);    //文件名称 是将文件转换编码避免乱码
public function save(Request $request)
    {
        $d = $request->param();
        $file = $d['file'];
        $file = str_replace('_',".",$d);
        $path = '.'.$file["file"];
        $path= iconv("UTF-8","GBK", $path);    //文件名称
        $spreadsheet = \PhpOffice\PhpSpreadsheet\IOFactory::load($path);
        $data = $spreadsheet
            ->getSheet(0) // 指定第一个工作表为当前
            ->toArray();  // 转为数组
        // 启动事务
        Db::startTrans();
        try {
            $num_company = 0;//成功导入公司数量
            $num_zhengshu = 0;//成功导入证书数量
            foreach ($data as $k=> $item) {
                if($k > 1){
                    //公司存在，则不新增公司
                    $company["name"] = $item[8];
                    $company["xinyongdaima"] = $item[9];
                    $company["faren"] = $item[10];
                    $company["yingyeqixian"] = $item[11];
                    $company["dengjijiguan"] = $item[12];
                    $company["zhucedi"] = $item[13];
                    $company["jingyingfanwei"] = $item[14];
                    $company["create_time"] = time();
                    $company["update_time"] = time();
                    $res = Db::name('enterprise')->where($company)->find();
                    if(!$res){
                        $con_id = Db::name('enterprise')->insertGetId($company);
                        $num_company++;
                    }else{
                        $con_id = $res["id"];
                    }
                    //信用信息
                    $zhengshu["pingjileixing"] = $item[1];
                    $zhengshu["xinyongdengji"] = $item[2];
                    $zhengshu["zhengshubianma"] = $item[3];
                    $zhengshu["pingjishijian"] = $item[4];
                    $zhengshu["youxiaoqizhi"] = $item[5];
                    $zhengshu["zhidaodanwei"] = $item[6];
                    $zhengshu["pingjijigou"] = $item[7];
                    $zhengshu["enterprise_id"] = $con_id;
                    $zhengshu["create_time"] = time();
                    $zhengshu["update_time"] = time();
                    //如果证书编码重复，导入失败
                    $repeat = Db::name('enterprise_zhengshu')
                        ->where("zhengshubianma",$zhengshu["zhengshubianma"])
                        ->find();
                    if($repeat){
                        Db::rollback();
                        return json(["code"=>4000,"msg"=>"有重复的证书编码，导入失败"]);
                    }
                    $res = Db::name('enterprise_zhengshu')->insertGetId($zhengshu);
                    $num_zhengshu++;
                }
            }
            return json(["code"=>200,"msg"=>"导导入成功：公司{$num_company}家，证书：{$num_zhengshu}个"]);
        } catch (\Exception $e) {
            // 回滚事务
            Db::rollback();
            return json(["code"=>4000,"msg"=>"导入失败，内存不足，请使用google浏览器重试"]);
        }
    }