使用phpexecl导出数据

调用：
$fileName = 'agent';
        $headArr = array('联系人', '联系人手机', '联系人电话');
        $data = array(array(1,2),array(1,3),array(5,7));
        $this->getExcel($fileName,$headArr,$data);//$data即查询或输出的值

function getExcel($fileName,$headArr,$data){
        require_once 'Classes/PHPExcel.php';
        require_once 'Classes/PHPExcel/Writer/Excel2007.php';
        require_once 'Classes/PHPExcel/Writer/Excel5.php';
        include_once 'Classes/PHPExcel/IOFactory.php';

        if(empty($data) || !is_array($data)){
            die("data must be a array");
        }
        if(empty($fileName)){
            exit;
        }
        $date = date("Y_m_d",time());
        $fileName .= "_{$date}.xlsx";

        //创建新的PHPExcel对象
        $objPHPExcel = new PHPExcel();
        $objProps = $objPHPExcel->getProperties();

        //设置表头
        $key = ord("A");
        foreach($headArr as $v){
            $colum = chr($key);
            $objPHPExcel->setActiveSheetIndex(0) ->setCellValue($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
                $j = chr($span);
                $objActSheet->setCellValue($j.$column, $value);
                $span++;
            }
            $column++;
        }

        $fileName = iconv("utf-8", "gb2312", $fileName);
        //重命名表
        $objPHPExcel->getActiveSheet()->setTitle('Simple');
        //设置活动单指数到第一个表,所以Excel打开这是第一个表
        $objPHPExcel->setActiveSheetIndex(0);
        //将输出重定向到一个客户端web浏览器(Excel2007)
        header('Content-Type: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet');
        header("Content-Disposition: attachment; filename=\"$fileName\"");
        header('Cache-Control: max-age=0');
        $objWriter = PHPExcel_IOFactory::createWriter($objPHPExcel, 'Excel2007');
        //文件通过浏览器下载
        $objWriter->save('php://output');
        exit;
    }