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KoolReport can help you to read your data in Excel files, processing them and finally turn them into beautiful charts and graphs.
Not stopping at reading your data from Excel files, KoolReport is able to write data into Excel files as well. Now you can load your data from Excel files, doing process with your data and then later put data back to excel files. In order to do so, going ahead to download KoolReport and its Excel package. For your information, KoolReport is a free and open-source reporting framework for PHP.