那不是真的.您不能只为表使用一些html代码，将.xls扩展名拍打到表上并在Excel中打开它.您需要一个库来为您处理.例如，看看这两个:

That's not really how it works. You can't just take some html code for a table, slap a .xls extension onto it and open it in Excel. You need a library to handle this for you. Have a look for example at these two:

• 哪种方法是在PHP中生成excel输出的***方法?
• https://pear.php .net/manual/en/package.fileformats.spreadsheet-excel-writer.intro.php

• Which is the best way to generate excel output in PHP?
• https://pear.php.net/manual/en/package.fileformats.spreadsheet-excel-writer.intro.php