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 have done a little searching, but cannot see if there is a facility to clean up the generated temporary fiiles, once the docx file is generated a cleanup would be beneficial.