做這個東西，被一個utf-8編碼中的bom害死了。
基本上導出的文件分為兩種：
1：類Excel格式，這個其實不是傳統意義上的Excel文件，只是因為Excel的兼容能力強，能夠正確打開而已。修改這種文件後再保存，通常會提示你是否要轉換成Excel文件。
優點：簡單。
缺點：難以生成格式，如果用來導入需要自己分別編寫相應的程序。
2：Excel格式，與類Excel相對應，這種方法生成的文件更接近於真正的Excel格式。
如果導出中文時出現亂碼，可以嘗試將字符串轉換成BIG5，例如下面就把$yourStr從utf-8轉換成了BIG5:
$yourStr = mb_convert_encoding("big5", "UTF-8", $yourStr);
下面詳細列舉幾種方法。
一、PHP導出Excel
1：第一推薦無比風騷的PHPExcel，官方網站： http://www.codeplex.com/PHPExcel
導入導出都成，可以導出office2007格式，同時兼容2003。
下載下來的包中有文檔和例子，大家可以自行研究。
抄段例子出來：
/**
* PHPExcel
*
* Copyright (C) 2006 - 2007 PHPExcel
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* @category PHPExcel
* @package PHPExcel
* @copyright Copyright (c) 2006 - 2007 PHPExcel ( http://www.codeplex.com/PHPExcel)
* @license http://www.gnu.org/licenses/lgpl.txt LGPL
* @version 1.5.0, 2007-10-23
*/
/** Error reporting */
error_reporting(E_ALL);
/** Include path **/
set_include_path(get_include_path() . PATH_SEPARATOR . '../Classes/');
/** PHPExcel */
include 'PHPExcel.php';
/** PHPExcel_Writer_Excel2007 */
include 'PHPExcel/Writer/Excel2007.php';
// Create new PHPExcel object
echo date('H:i:s') . " Create new PHPExcel object\n";
$objPHPExcel = new PHPExcel();
// Set properties
echo date('H:i:s') . " Set properties\n";
$objPHPExcel->getProperties()->setCreator("Maarten Balliauw");
$objPHPExcel->getProperties()->setLastModifiedBy("Maarten Balliauw");
$objPHPExcel->getProperties()->setTitle("Office 2007 XLSX Test Document");
$objPHPExcel->getProperties()->setSubject("Office 2007 XLSX Test Document");
$objPHPExcel->getProperties()->setDescrīption("Test document for Office 2007 XLSX, generated using PHP classes.");
$objPHPExcel->getProperties()->setKeywords("office 2007 openxml php");
$objPHPExcel->getProperties()->setCategory("Test result file");
// Add some data
echo date('H:i:s') . " Add some data\n";
$objPHPExcel->setActiveSheetIndex(0);
$objPHPExcel->getActiveSheet()->setCellValue('A1', 'Hello');
$objPHPExcel->getActiveSheet()->setCellValue('B2', 'world!');
$objPHPExcel->getActiveSheet()->setCellValue('C1', 'Hello');
$objPHPExcel->getActiveSheet()->setCellValue('D2', 'world!');
// Rename sheet
echo date('H:i:s') . " Rename sheet\n";
$objPHPExcel->getActiveSheet()->setTitle('Simple');
// Set active sheet index to the first sheet, so Excel opens this as the first sheet
$objPHPExcel->setActiveSheetIndex(0);
// Save Excel 2007 file
echo date('H:i:s') . " Write to Excel2007 format\n";
$objWriter = new PHPExcel_Writer_Excel2007($objPHPExcel);
$objWriter->save(str_replace('.php', '.xlsx', __FILE__));
// Echo done
echo date('H:i:s') . " Done writing file.\r\n";
2、使用pear的Spreadsheet_Excel_Writer類
下載地址： http://pear.php.net/package/Spreadsheet_Excel_Writer
此類依賴於OLE,下載地址：http://pear.php.net/package/OLE
需要注意的是導出的Excel文件格式比較老，修改後保存會提示是否轉換成更新的格式。
不過可以設定格式，很強大。
require_once 'Spreadsheet/Excel/Writer.php';
// Creating a workbook
$workbook = new Spreadsheet_Excel_Writer();
// sending HTTP headers
$workbook->send('test.xls');
// Creating a worksheet
$worksheet =& $workbook->addWorksheet('My first worksheet');
// The actual data
$worksheet->write(0, 0, 'Name');
$worksheet->write(0, 1, 'Age');
$worksheet->write(1, 0, 'John Smith');
$worksheet->write(1, 1, 30);
$worksheet->write(2, 0, 'Johann Schmidt');
$worksheet->write(2, 1, 31);
$worksheet->write(3, 0, 'Juan Herrera');
$worksheet->write(3, 1, 32);
// Let's send the file
$workbook->close();
?>
3:利用smarty，生成符合Excel規範的XML或HTML文件
支持格式，非常完美的導出方案。不過導出來的的本質上還是XML文件，如果用來導入就需要另外處理了。
詳細內容請見rardge大俠的帖子：http://bbs.chinaunix.net/viewthread.php?tid=745757
需要注意的是如果導出的表格行數不確定時，最好在模板中把"ss:ExpandedColumnCount="5" ss:ExpandedRowCount="21""之類的東西刪掉。
4、利用pack函數打印出模擬Excel格式的斷句符號，這種更接近於Excel標準格式，用office2003修改後保存，還不會彈出提示，推薦用這種方法。
缺點是無格式。
// Send Header
header("Pragma: public");
header("Expires: 0");
header("Cache-Control: must-revalidate, post-check=0, pre-check=0");
header("Content-Type: application/force-download");
header("Content-Type: application/octet-stream");
header("Content-Type: application/download");;
header("Content-Disposition: attachment;filename=test.xls ");
header("Content-Transfer-Encoding: binary ");
// XLS Data Cell
xlsBOF();
xlsWriteLabel(1,0,"My excel line one");
xlsWriteLabel(2,0,"My excel line two : ");
xlsWriteLabel(2,1,"Hello everybody");
xlsEOF();
function xlsBOF() {
echo pack("ssssss", 0x809, 0x8, 0x0, 0x10, 0x0, 0x0);
return;
}
function xlsEOF() {
echo pack("ss", 0x0A, 0x00);
return;
}
function xlsWriteNumber($Row, $Col, $Value) {
echo pack("sssss", 0x203, 14, $Row, $Col, 0x0);
echo pack("d", $Value);
return;
}
function xlsWriteLabel($Row, $Col, $Value ) {
$L = strlen($Value);
echo pack("ssssss", 0x204, 8 + $L, $Row, $Col, 0x0, $L);
echo $Value;
return;
}
?>
不過筆者在64位linux系統中使用時失敗了，斷句符號全部變成了亂碼。
5、使用製表符、換行符的方法
製表符"\t"用戶分割同一行中的列，換行符"\t\n"可以開啟下一行。
header("Content-Type: application/vnd.ms-execl");
header("Content-Disposition: attachment; filename=myExcel.xls");
header("Pragma: no-cache");
header("Expires: 0");
/*first line*/
echo "hello"."\t";
echo "world"."\t";
echo "\t\n";
/*start of second line*/
echo "this is second line"."\t";
echo "Hi,pretty girl"."\t";
echo "\t\n";
?>
6、使用com
如果你的PHP可以開啟com模塊，就可以用它來導出Excel文件
$filename = "c:/spreadhseet/test.xls";
$sheet1 = 1;
$sheet2 = "sheet2";
$excel_app = new COM("Excel.application") or Die ("Did not connect");
print "Application name: {$excel_app->Application->value}\n" ;
print "Loaded version: {$excel_app->Application->version}\n";
$Workbook = $excel_app->Workbooks->Open("$filename") or Die("Did not open $filename $Workbook");
$Worksheet = $Workbook->Worksheets($sheet1);
$Worksheet->activate;
$excel_cell = $Worksheet->Range("C4");
$excel_cell->activate;
$excel_result = $excel_cell->value;
print "$excel_result\n";
$Worksheet = $Workbook->Worksheets($sheet2);
$Worksheet->activate;
$excel_cell = $Worksheet->Range("C4");
$excel_cell->activate;
$excel_result = $excel_cell->value;
print "$excel_result\n";
#To close all instances of excel:
$Workbook->Close;
unset($Worksheet);
unset($Workbook);
$excel_app->Workbooks->Close();
$excel_app->Quit();
unset($excel_app);
?>
一個更好的例子： http://blog.chinaunix.net/u/16928/showart_387171.html
一、PHP導入Excel
1：還是用PHPExcel，官方網站： http://www.codeplex.com/PHPExcel。
2：使用PHP-ExcelReader,下載地址: http://sourceforge.net/projects/phpexcelreader
舉例：
require_once 'Excel/reader.php';
// ExcelFile($filename, $encoding);
$data = new Spreadsheet_Excel_Reader();
// Set output Encoding.
$data->setOutputEncoding('utf8');
$data->read(' jxlrwtest.xls');
error_reporting(E_ALL ^ E_NOTICE);
for ($i = 1; $i <= $data->sheets[0]['numRows']; $i++) {
for ($j = 1; $j <= $data->sheets[0]['numCols']; $j++) {
echo "\"".$data->sheets[0]['cells'][$i][$j]."\",";
}
echo "\n";
}
?>
