title: Spreadsheet_Excel_Writer Excel 2007 Format
body: <p>I am using PEAR's <a href="http://pear.php.net/package/Spreadsheet_Excel_Writer" rel="nofollow">Spreadsheet_Excel_Writer</a> to generate excel file. It works fine. </p>
  
  <p>Now we need to make the excel file 2007 format so that can be opened in more devices, such as ipad. </p>
  
  <p>Can Spreadsheet_Excel_Writer generate 2007 excel file format at all? or we have to switch to <a href="http://phpexcel.codeplex.com/" rel="nofollow">http://phpexcel.codeplex.com/</a></p>
  
  <p>Thanks in advance.</p>