Nuno's right, but I guess we are all short on time, and only able to contribute on small scale. The dochowto has a docweb sheet, which should be updated for the new docweb templates, but apart from that, it is not far from being on docweb. Then it could be removed from php.net.
I'm pretty tight for time, too, but: Is the intent, here to incorporate the manual into docweb by 1) switching over completely to the docweb templating system, and drop the docbook, or 2) keep maintaining the docbook, and process the docbook XML into docweb templates?
S