I really appreciate this article, and I've used it several times in the past to get PHP builds running on my machine. I've just built it again, however, to get the PDFlib working, and I've found that phpinfo() shows my old build date with my old configure command.
I'm running OS 10.2.6 (maybe that's part of it?). My /usr/libexec/httpd/libphp4.so file *is* the new build--the date on the file is today. There aren't any errors that I can see in my Apache error log. (There is a line that reads "Accept mutex: flock (Default: flock)" but that doesn't seem like an error, does it?)
The httpd.conf file is normal; php is on. It's serving pages, all right...but as I say it's the old build, not the new one. I haven't tried rebooting yet, but I don't recall having to reboot in the past when I've built PHP.
As an extra data point, I don't have the command line version of PHP at /usr/bin/php, for whatever reason.
Any ideas, anyone?