Please note this is an old forum thread. Information in this post may be out-to-date and/or erroneous.
Every phpdocx version includes new features and improvements. Previously unsupported features may have been added to newer releases, or past issues may have been corrected.
I mean you can hide notices just using error_reporting and display_errors functions on your script or on the top of HTML2WordML.inc class. And it's not an error but a PHP notice.