使用 PHPExcel 保存时文件格式无效

Question

$file = '{full path and filename}';

//Read file
$file_type = PHPExcel_IOFactory::identify( $file );
$excel_reader = PHPExcel_IOFactory::createReader($file_type);              
$this->php_excel = $excel_reader->load($file);              

//Set some values
$this->php_excel->setActiveSheetIndex(0);
$this->php_excel->getActiveSheet()->SetCellValue('A1', 'Hello');
$this->php_excel->getActiveSheet()->SetCellValue('B2', 'world!');
$this->php_excel->getActiveSheet()->SetCellValue('C1', 'Hello');
$this->php_excel->getActiveSheet()->SetCellValue('D2', 'world!');

//Write to file new location    
$excel_writer = PHPExcel_IOFactory::createWriter($this->php_excel, 'Excel2007' );
$excel_writer->save('c:\test.xls');

c:\test.xls 已创建，但我在尝试加载 Excel 文件时遇到错误（来自 OpenOffice，但我认为这不是问题所在）。我正在阅读的文件约为 260kb，而创建的 test.xls 约为 64kb。它说无效，OpenOffice 在打开文件失败时尝试修复文件。

我做错了什么？

Answer 1

感谢@Mark Baker，我发现我可以将创建 Writer 的行更改为：

//Given that the file that are going to be saved should be of the same
//format that the read file has. 
$excel_writer = PHPExcel_IOFactory::createWriter($this->php_excel, $file_type );

使用 PHPExcel 保存时文件格式无效

Invalid file format when saving with PHPExcel

php

excel

phpexcel