PHPOffice/PHPExcel GH-558 Check if Styles exist in Excel2003XML file #331
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I have encountered an Excel2003XML file which does not contain styles at all. Due to this the reader throws a warning when trying to iterate over the styles array.
This is:
Checklist:
Why this change is needed?
See PHPOffice/PHPExcel#558 and PHPOffice/PHPExcel#559