首先安装 composer 链接地址

composer require phpoffice/phpexcel

1.读取文件导入数据

public function upload(){        if (request()->isPost()) {            $file = input('post.importFile'); //获取表单上传文件            $ext = input('post.ext'); //获取表单上传文件            if ($file) {                $path = $file;                $file_name = ROOT_PATH . 'public' . $path;   //上传文件的地址                if ($ext == 'xls') {                    include "../vendor/phpoffice/phpexcel/Classes/PHPExcel/Reader/Excel5.php";                    $objReader = new \PHPExcel_Reader_Excel5();                } else if ($ext == 'xlsx') {                    include "../vendor/phpoffice/phpexcel/Classes/PHPExcel/Reader/Excel2007.php";                    $objReader = new \PHPExcel_Reader_Excel2007();                } else if ($ext == 'csv') {                    include "../vendor/phpoffice/phpexcel/Classes/PHPExcel/Reader/CSV.php";                    $objReader = new \PHPExcel_Reader_CSV();                } else {                    die('文件格式不正确');                }                $obj_PHPExcel = $objReader->load($file_name, $encode = 'utf-8');//加载文件内容,编码utf-8                $excel_array = $obj_PHPExcel->getsheet(0)->toArray();   //转换为数组格式                array_shift($excel_array);  //删除第一个数组(标题);                $result = [];                foreach($excel_array as $v){                    //这里实现逻辑                  	$res = $getData -> searchComponyali($v[0]);                    array_push($result, $res);                }                return ['code' => 1, 'msg' => '查询成功'];            }        }else{            return $this->fetch();        }    }

2.数据导出

/**     * excel表格导出     * @param string $fileName 文件名称     * @param array $headArr 表头名称     * @param array $data 要导出的数据     * @author cyh     */    public function excelExport()    {        $fileName = '公司数据';        $headArr = ['id', '公司名称', '法定代表人', '注册资本', '注册时间', '经营状态', '统一社会信用代码', '工商注册号', '纳税人识别号', '组织机构代码', '行业大类', '行业小类', '企业类型', '人员规模', '经营期限自', '经营期限至', '登记机关', '核准日期', '注册地址', '经营范围'];        $redis = new Redis(config('cache.redis'));        $data = $redis->get('companyResultData'.date('Y-m-d'));        $data = json_decode($data, true);        $fileName .= "_" . date("Y_m_d") . ".xls";        $objPHPExcel = new \PHPExcel();        $objPHPExcel->getProperties();        $key = ord("A"); // 设置表头        foreach ($headArr as $v) {            $colum = chr($key);            $objPHPExcel->setActiveSheetIndex(0)->setCellValue($colum . '1', $v);            $objPHPExcel->setActiveSheetIndex(0)->setCellValue($colum . '1', $v);            $key += 1;        }        $column = 2;        $objActSheet = $objPHPExcel->getActiveSheet();        foreach ($data as $key => $rows) { // 行写入            $span = ord("A");            foreach ($rows as $keyName => $value) { // 列写入                $value = is_numeric($value) ? "'" . $value : $value;                $objActSheet->setCellValue(chr($span) . $column, $value);                $span++;            }            $column++;        }        $fileName = iconv("utf-8", "gb2312", $fileName); // 重命名表        $objPHPExcel->setActiveSheetIndex(0); // 设置活动单指数到第一个表,所以Excel打开这是第一个表        header('Content-Type: application/vnd.ms-excel');        header("Content-Disposition: attachment;filename= $fileName ");        header('Cache-Control: max-age=0');        $objWriter = \PHPExcel_IOFactory::createWriter($objPHPExcel, 'Excel5');        $objWriter->save('php://output'); // 文件通过浏览器下载        exit();    }