Codeigniter+PHPExcel实现导出数据到Excel文件
PHPExcel是用来操作OfficeExcel文档的一个PHP类库,它基于微软的OpenXML标准和PHP语言。可以使用它来读取、写入不同格式的电子表格。而Codeigniter是一个功能强大的PHP框架。二者结合就能起到非常棒的效果啦!
1.准备工作
下载PHPExcel:http://phpexcel.codeplex.com
这是个强大的Excel库,这里只演示导出Excel文件的功能,其中的大部分功能可能都用不着。
2.安装PHPExcel到Codeigniter
1)解压压缩包里的Classes文件夹中的内容到application\libraries\目录下,目录结构如下:
--application\libraries\PHPExcel.php
--application\libraries\PHPExcel(文件夹)
2)修改application\libraries\PHPExcel\IOFactory.php文件
--将其类名从PHPExcel_IOFactory改为IOFactory,遵从CI类命名规则。
--将其构造函数改为public
3.安装完毕,写一个导出excel的控制器(Controller)
代码如下:
复制代码 代码如下:
classTable_exportextendsCI_Controller{
function__construct()
{
parent :: __construct();
// Hereyoushouldaddsomesortofuservalidation
// topreventstrangersfrompullingyourtabledata
}
functionindex($table_name)
{
$query = $this -> db -> get($table_name);
if(!$query)
returnfalse;
// StartingthePHPExcellibrary
$this -> load -> library('PHPExcel');
$this -> load -> library('PHPExcel/IOFactory');
$objPHPExcel = newPHPExcel();
$objPHPExcel -> getProperties() -> setTitle("export") -> setDescription("none");
$objPHPExcel -> setActiveSheetIndex(0);
// Fieldnamesinthefirstrow
$fields = $query -> list_fields();
$col = 0;
foreach($fieldsas$field)
{
$objPHPExcel -> getActiveSheet() -> setCellValueByColumnAndRow($col, 1, $field);
$col++;
}
// Fetchingthetabledata
$row = 2;
foreach($query -> result()as$data)
{
$col = 0;
foreach($fieldsas$field)
{
$objPHPExcel -> getActiveSheet() -> setCellValueByColumnAndRow($col, $row, $data -> $field);
$col++;
}
$row++;
}
$objPHPExcel -> setActiveSheetIndex(0);
$objWriter = IOFactory :: createWriter($objPHPExcel, 'Excel5');
// Sendingheaderstoforcetheusertodownloadthefile
header('Content-Type:application/vnd.ms-excel');
header('Content-Disposition:attachment;filename="Products_' . date('dMy') . '.xls"');
header('Cache-Control:max-age=0');
$objWriter -> save('php://output');
}
}
4.测试
加入数据库有表名为products,此时可以访问http://www.yoursite.com/table_export/index/products导出Excel文件了。

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