PHPExcel是用來操作OfficeExcel文檔的一個PHP類庫，它基于微軟的OpenXML標準和PHP語言?？梢允褂盟鼇碜x取、寫入不同格式的電子表格。而Codeigniter是一個功能強大的PHP框架。二者結合就能起到非常棒的效果啦！
1.準備工作
下載PHPExcel：http://phpexcel.codeplex.com
這是個強大的Excel庫，這里只演示導出Excel文件的功能，其中的大部分功能可能都用不著。
2.安裝PHPExcel到Codeigniter
1）解壓壓縮包里的Classes文件夾中的內容到application\libraries\目錄下，目錄結構如下：
--application\libraries\PHPExcel.php
--application\libraries\PHPExcel(文件夾)
2）修改application\libraries\PHPExcel\IOFactory.php文件
--將其類名從PHPExcel_IOFactory改為IOFactory，遵從CI類命名規則。
--將其構造函數改為public
3.安裝完畢，寫一個導出excel的控制器（Controller）
代碼如下：
復制代碼 代碼如下:
<?php
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');
$objWriter -> save('php://output');
}
}
classTable_exportextendsCI_Controller{
function__construct()
{
parent :: __construct();
// Hereyoushouldaddsomesortofuservalidation
// topreventstrangersfrompullingyourtabledata
}
functionindex($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.測試
加入數據庫有表名為products，此時可以訪問http://www.yoursite.com/table_export/index/products導出Excel文件了。
