These ebuilds come from http://git.overlays.gentoo.org/gitweb/?p=proj/php.git;a=summary.
If you have some problems, go to the official site first.
php : The PHP language runtime engine: CLI, CGI, FPM/FastCGI, Apache2 and embed SAPIs. ( http://php.net/ )
Add an ebuild in portage :
The ebuild is now in the portage tree.
You can also use layman : emerge layman then layman -a php
For Paludis use this rsync : rsync://gentoo.zugaina.org/php-portage
If you have a problem : ycarus(-at-)zugaina.org