Umask default value

I need my PHP default umask to be 027, since I do not want users creating files world readable unless they do so explicitly. I'm running Apache on Linux, and I've changed /etc/profile.local to 027 so all bash logins now get 027 by default. I also rebooted the server so any process getting umask via /etc/profile.local would see the new value. But PHP still starts with 022, and I did not see an .ini directive to control the default umask in PHP. Does PHP inherit umask from Apache? Does Apache inherit it from bash? Any ideas? Egan