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I try to read the file header DOCX files and PPTX files to determine if two files, but the two files have the same header. How can I distinguish PPTX and DOCX.

Cuong Nguyenviet
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    Check file extension. – Mohammad Arshad Alam May 19 '15 at 02:01
  • if checking the file extension when changing the file extension will allow the application to upload files. – Cuong Nguyenviet May 19 '15 at 02:16
  • I'm not totally sure how to answer this question, but as a suggestion, you might consider adding some more tags, if you can think of some relevant ones that already exist. Also, some details from the files themselves? Have you tried anything already? :) – Augusta May 19 '15 at 02:36
  • I still do not really understand the structure of the file format of MS * X because they all have the same header file and resembles the .zip file.. I'll try to find out what's the difference between these files. Thank you so much – Cuong Nguyenviet May 19 '15 at 03:51
  • http://stackoverflow.com/questions/450947/find-out-the-real-file-type – Loathing May 19 '15 at 14:03

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