thinkphp5使用PHPExcel导出，导入Excel数据

    /**
     * 地址:https://github.com/PHPOffice/PHPExcel    下载PHPExcel，下载后只需要Classes目录下的文件即可。
     * 数据导出
     * @param array $title   标题行名称
     * @param array $data   导出数据
     * @param string $fileName 文件名
     * @param string $savePath 保存路径
     * @param $type   是否下载  false--保存   true--下载
     * @return string   返回文件全路径
     */
    function exportExcel($title=array(), $data=array(), $fileName=‘‘,$sheet=‘‘, $savePath=‘./‘, $isDown=false){
        Loader::import(‘phpexcel.PHPExcel‘);
        Loader::import(‘phpexcel.PHPExcel.IOFactory‘);
        $obj = new \PHPExcel();  

        //横向单元格标识
        $cellName = array(‘A‘, ‘B‘, ‘C‘, ‘D‘, ‘E‘, ‘F‘, ‘G‘, ‘H‘, ‘I‘, ‘J‘, ‘K‘, ‘L‘, ‘M‘, ‘N‘, ‘O‘, ‘P‘, ‘Q‘, ‘R‘, ‘S‘, ‘T‘, ‘U‘, ‘V‘, ‘W‘, ‘X‘, ‘Y‘, ‘Z‘, ‘AA‘, ‘AB‘, ‘AC‘, ‘AD‘, ‘AE‘, ‘AF‘, ‘AG‘, ‘AH‘, ‘AI‘, ‘AJ‘, ‘AK‘, ‘AL‘, ‘AM‘, ‘AN‘, ‘AO‘, ‘AP‘, ‘AQ‘, ‘AR‘, ‘AS‘, ‘AT‘, ‘AU‘, ‘AV‘, ‘AW‘, ‘AX‘, ‘AY‘, ‘AZ‘);  

        $obj->getActiveSheet(0)->setTitle($sheet);   //设置sheet名称
        $_row = 1;   //设置纵向单元格标识
        if($title){
            $_cnt = count($title);
            // $obj->getActiveSheet(0)->mergeCells(‘A‘.$_row.‘:‘.$cellName[$_cnt-1].$_row);   //合并单元格
            // $obj->setActiveSheetIndex(0)->setCellValue(‘A‘.$_row, ‘数据导出：‘.date(‘Y-m-d H:i:s‘));  //设置合并后的单元格内容
            // $_row++;
            $i = 0;
            foreach($title AS $v){   //设置列标题
                $obj->setActiveSheetIndex(0)->setCellValue($cellName[$i].$_row, $v);
                $i++;
            }
            $_row++;
        }  

        //填写数据
        if($data){
            $i = 0;
            foreach($data AS $_v){
                $j = 0;
                foreach($_v AS $_cell){
                    $obj->getActiveSheet(0)->setCellValue($cellName[$j] . ($i+$_row), $_cell);
                    $j++;
                }
                $i++;
            }
        }  

        //文件名处理
        if(!$fileName){
            $fileName = uniqid(time(),true);
        }  

        $objWrite = \PHPExcel_IOFactory::createWriter($obj, ‘Excel2007‘);  

        if($isDown){   //网页下载
            header(‘pragma:public‘);
            header("Content-Disposition:attachment;filename=$fileName.xls");
            $objWrite->save(‘php://output‘);exit;
        }  

        $_fileName = iconv("utf-8", "gb2312", $fileName);   //转码
        $_savePath = $savePath.$_fileName.‘.xlsx‘;
        $objWrite->save($_savePath);  

        return $savePath.$fileName.‘.xlsx‘;
    }  

        /**
     * 地址:https://github.com/PHPOffice/PHPExcel
     * 数据导入
     * @param string $file excel文件
     * @param string $sheet
     */
    function importExecl($file=‘‘, $sheet=0){
        $file = iconv("utf-8", "gb2312", $file);   //转码
        if(empty($file) OR !file_exists($file)) {
            die(‘file not exists!‘);
        }
        Loader::import(‘phpexcel.PHPExcel‘);
        $objRead = new \PHPExcel_Reader_Excel2007();   //建立reader对象
        var_dump($objRead);
        die;
        if(!$objRead->canRead($file)){
            $objRead = new \PHPExcel_Reader_Excel5();
            if(!$objRead->canRead($file)){
                die(‘No Excel!‘);
            }
        }  

        $cellName = array(‘A‘, ‘B‘, ‘C‘, ‘D‘, ‘E‘, ‘F‘, ‘G‘, ‘H‘, ‘I‘, ‘J‘, ‘K‘, ‘L‘, ‘M‘, ‘N‘, ‘O‘, ‘P‘, ‘Q‘, ‘R‘, ‘S‘, ‘T‘, ‘U‘, ‘V‘, ‘W‘, ‘X‘, ‘Y‘, ‘Z‘, ‘AA‘, ‘AB‘, ‘AC‘, ‘AD‘, ‘AE‘, ‘AF‘, ‘AG‘, ‘AH‘, ‘AI‘, ‘AJ‘, ‘AK‘, ‘AL‘, ‘AM‘, ‘AN‘, ‘AO‘, ‘AP‘, ‘AQ‘, ‘AR‘, ‘AS‘, ‘AT‘, ‘AU‘, ‘AV‘, ‘AW‘, ‘AX‘, ‘AY‘, ‘AZ‘);  

        $obj = $objRead->load($file);  //建立excel对象
        $currSheet = $obj->getSheet($sheet);   //获取指定的sheet表
        $columnH = $currSheet->getHighestColumn();   //取得最大的列号
        $columnCnt = array_search($columnH, $cellName);
        $rowCnt = $currSheet->getHighestRow();   //获取总行数
        $data = array();
        for($_row=1; $_row<=$rowCnt; $_row++){  //读取内容
            for($_column=0; $_column<=$columnCnt; $_column++){
                $cellId = $cellName[$_column].$_row;
                $cellValue = $currSheet->getCell($cellId)->getValue();
                 //$cellValue = $currSheet->getCell($cellId)->getCalculatedValue();  #获取公式计算的值
                if($cellValue instanceof PHPExcel_RichText){   //富文本转换字符串
                    $cellValue = $cellValue->__toString();
                }  

                $data[$_row][$cellName[$_column]] = $cellValue;
            }
        }
        return $data;
    }

原文地址：https://www.cnblogs.com/mengor/p/8136365.html