php scripts need to be in the web publishing directory. have you looked through the httpd.conf for php references and ensured they are uncommented?
i) do you have php installed?
ii) what happens when you call the page?
iii) if php is installed you can run them like shell scripts (my unix is terrible - windoze at work all day)
e.g.
php myscript.php
i think.
sorry i can't help more, but the more information the better 🙂
vini