The Oracle Technology Network (which promotes the development community) is upgrading its software platform and reorganizing some content. The PHP Oracle forum is now at https://community.oracle.com/community/development_tools/php
. The top level "PHP Developer Center" is at http://www.oracle.com/technetwork/database/database-technologies/php/whatsnew/index.html
. I notice my old bookmarks for the Developer Center redirect to its current location, but this doesn't seem true of some very old URLs for the forum.