Steve Meyers said:
In any case, it probably wouldn't take a genius to rewrite the MySQL libraries from scratch and release it under the LGPL. Eventually, someone will probably do that.
The current tactic with Rawhide and Debian is to just link php against the older v3 LGPL libraries. It is a workable solution as long as nothing gets added that will break v3 clients talking to v4 servers or the overhead in maintaining older v3 libraries becomes too much.