That depends on who posts it. If it's an official release from us, it'll be
made available in a blade (or in an upgrade!). If one of the developers
in the open-source community releases it, it'll be wherever they store
their software -- some store it on ftp.e-smith.org, others on their own
websites.
Unofficial PHP upgrades usually tend to come from Dan Brown, whose
website is at
http://www.familybrown.org/ . I don't believe that Darrell
May, whose URL you mentioned, has done PHP contribs, so you probably
won't see them there.
Cheers,
--Rich