php 导出Excel表格

public function test(){
    $xlsName = "测试";

    //注意  数组第一个字段必须是小写  数组第二个（列标题）根据你的情况填写
    $xlsCell = array(
        array('number','单号'),
        array('totalNum','采购总数量'),
        array('dataAmount','单据金额'),
        array('actualAmount','实际金额'),
        array('createTime','生成时间')
    );
    $xlsModel = new ReinsurancePolicy();
    $xlsData = $xlsModel->Field('number,totalNum,dataAmount,actualAmount,createTime')->select()->toArray();
    $this->exportExcel($xlsName,$xlsCell,$xlsData);
}

function export_excel($expTitle,$expCellName,$expTableData)
{
    $xlsTitle = iconv('utf-8', 'gb2312', $expTitle);//文件名称
    $fileName = $expTitle ;//or $xlsTitle 文件名称可根据自己情况设定
    $cellNum = count($expCellName);
    $dataNum = count($expTableData);
    $objPHPExcel = new PHPExcel();//方法一
    $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');
    //设置头部导出时间备注
    $objPHPExcel->getActiveSheet(0)->mergeCells('A1:' . $cellName[$cellNum - 1] . '1');//合并单元格
    $objPHPExcel->setActiveSheetIndex(0)->setCellValue('A1', $expTitle . ' 导出时间:' . date('Y-m-d H:i:s'));
    //设置列名称
    for ($i = 0; $i < $cellNum; $i++) {
        $objPHPExcel->setActiveSheetIndex(0)->setCellValue($cellName[$i] . '2', $expCellName[$i][1]);
    }
    //赋值
    for ($i = 0; $i < $dataNum; $i++) {
        for ($j = 0; $j < $cellNum; $j++) {
            $objPHPExcel->getActiveSheet(0)->setCellValue(
                $cellName[$j] . ($i + 3), $expTableData[$i][$expCellName[$j][0]]
            );
        }
    }
    ob_end_clean();//这一步非常关键，用来清除缓冲区防止导出的excel乱码
    header('pragma:public');
    header('Content-type:application/vnd.ms-excel;charset=utf-8;name="' . $xlsTitle . '.xls"');
    header("Content-Disposition:attachment;filename=$fileName.xls");//"xls"参考下一条备注
    $objWriter = PHPExcel_IOFactory::createWriter(
        $objPHPExcel, 'Excel5'
    );//"Excel2007"生成2007版本的xlsx，"Excel5"生成2003版本的xls
    $objWriter->save('php://output');
}