I'm trying to upload a .xlsx document onto a website. I need viewers to be able to edit sections of the document without downloading the document onto their computer. I also need each viewer to have his/her own copy of the file, such that, if one person edited their copy, it would not affect anyone else's document. Is there a way to do this?
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You are talking about Excel 2007 files right?
If so, then the short answer is no. PHP does not support the proprietary Microsoft formats. (M$ would probably try to sue them if they did)
The much much longer answer is possibly yes, but it would require you to get very familiar with the .xlsx format and build a parser so PHP could actually interact with it.
If you could export the .xslx files into XML or a CSV format, that would make things a LOT easier.
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