In the linked forum thread Alvero reports that he has discovered that Eduard Koucky is unavailable to continue work on the outstanding PHPRFC project that he has built so generously over the years. I believe that this is a great opportunity for someone to stand up and take over the reins and improve the connector with the new features that the new RFC connector provides. There are great new features available in the latest RFC connector as anyone who has been following the NetWeaver RFC gives the Next generation Ruby and Perl Connectors by piers.harding/blog could atest. The channels are RFC SDK group opens "talks" with RFC Connector developers. The opportunity is available, so lets go for it.
