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.
As Nicolas says try setEncodeUTF8 method or, better, use an UTF-8 editor. If you're using Eclipse, remember it's default charset of this IDE is cp1252.