It’s easy to save an Excel file as CSV and read it in PHP with the fgetcsv function but this may not work so well if the file contains non-English characters.

Excel uses a non-standard character encoding for csv files.

You can save an Excel file as ‘unicode’ text however there are several unicode systems - Windows uses UTF-16, and PHP uses UTF-8.

To open the ‘unicode text’ file in PHP you have to convert it, in addition you may want to be able to open UTF-8 files that may be created by other systems.