当我用Microsoft Excel打开这个xls时，会出现下一条消息：“proof.xls”的文件格式和扩展名不匹配。文件可能已损坏或不安全。除非您信任其源，否则不要打开它你还想打开吗？“
Microsoft Office无论如何都会打开文档并让我将其保存为新格式，但我需要“即时”重新编辑此文档（不使用Excel打开并保存文件步骤）以使用PHPExcel加载它。
这个文件来自一个自动网页生成器，我不知道它是如何编码xls的。
这是一个文件结构提取（只有第一行的表，不能在这里粘贴整个文件内容）：
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答案 0 :(得分：1)
那是因为它不是.xls文件
.xls个文件是名为BIFF的二进制格式，位于OLE2包装器中。
您发布的部分文件是SpreadSheetML格式文件，这是Excel 2003引入的XML格式，但从未证明特别受欢迎，后来被OfficeOpenXML（.xlsx）格式取代
这是一种有效的电子表格格式，MS Excel完全能够阅读，但它不是BIFF格式，因此抱怨扩展名与格式不符。
将扩展名更改为.xml，然后在MS Excel中阅读。