ci框架整合phpexcel，实现数据导出excel

1.搜索“phpexcel”，下载

2.解压后如图

3.打开Class文件夹，全选复制

4.找到项目的  libraries 文件夹粘贴，不是  sysm\libraries这个文件夹，若是没有就新建一个，

5.打开 phpexcel.php,加入一行代码

require(PHPEXCEL_ROOT . 'PHPExcel/IOFactory.php');

6.打开 PHPExcel 文件夹，打开

IOFactory.php

将 PHPExcel_IOFactory 修改成  IOFactory

//class PHPExcel_IOFactory
class IOFactory

7.程序中引用

引入

$this->load->library('PHPExcel');
$this->load->library('PHPExcel/IOFactory');

建立对象

$excel = new PHPExcel();
//列名
$excel->getActiveSheet()->setCellValue('A1', '登陆时间');
$excel->getActiveSheet()->setCellValue('B1', '登陆ip');

遍历查询结果，

foreach ($logsInfo as $logsKey => $logsVal){
                    $num = $logsKey+2;
                    $excel->getActiveSheet()->setCellValue('A'.$num, date('Y-m-d',$logsVal['time']));
                    $excel->getActiveSheet()->setCellValue('C'.$num, $logsVal['IP']);
                }

输出到浏览器，并下载到本地

                $write = new PHPExcel_Writer_Excel2007($excel);
                $excelName  = $username.'-登录日志-'.date('Y-m-d').'.xlsx';
                header("Pragma: public");
                header("Expires: 0");
                header("Cache-Control:must-revalidate, post-check=0, pre-check=0");
                header("Content-Type:application/force-download");
                header("Content-Type:application/vnd.ms-execl");
                header("Content-Type:application/octet-stream");
                header("Content-Type:application/download");
                header("Content-Disposition:attachment;filename=".$excelName);
                header("Content-Transfer-Encoding:binary");
                $write->save('php://output');