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32

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2
A: 

office 2007 uses ziped xml files. The format is way different to previous versions I believe.

Preet Sangha
+1  A: 

The format for Office 2007 and later is XML. You can access it's format using any number of XML libraries available to PHP. For more details on the namespaces, etc. of the format, check out MS's documentation.

Andrew Sledge