Apache displays PHP source

[G-Net]

A friend of mine is having trouble with PHP running with Apache. If he starts his server running his /etc/rc3.d script, Apache starts just fine (with no errors), but any PHP page displays the source, and doesn't process. When he starts it manually (usr/sbin/apachectl start), PHP runs fine.

Any ideas why this would happen? Is it simply a matter of recompiling?

TIA!

[LordShryku]

What's the /etc/rc3.d look like? Does it specify to use a different httpd.conf file? Is it running Apache from the same source directory that apachectl is running from?