Sourceforge Gallery2 and PHP

[Soo-Hyun Choi]

Hi,

I am trying to install Gallery (http://gallery.sourceforge.net/).
Before I install this, I needed to install PHP on my system. I
installed PHP using 'sudo apt-get install php5' and installation went
with no problem.

However, whenever I try to open 'index.php' with Firefox web browser,
it cannot recognize the php file such that it tries to open it with a
text editor. (Firefox and Mozilla can never open the php file.)

1. How do I check whether my PHP installation is sound on my system?
2. Suppose my PHP installation is good, how do I install the Gallery2
from Sourceforge?

Thanks,