I used the install_ubuntu.sh script on my Ubuntu 14.04 server, and the script worked fine, Phabricator was up and runnng. However, whenever I would navigate to my domain address, the page only displayed the contents of the .php file (I guess index.php? Whatever runs the first time you fire up Phabricator), rather than actually running the php file. After a little searching around, I found that Ubuntu was missing the libapache2-mod-php5 package. After installing it, everything worked great.
Can this package be included in install_ubuntu.sh to simplify future installations. Had that been included it would have made the Phabricator installation so much easier.