How do I find out the hostname of my Mac OS X server? I'm trying to connect with mysql_connect using PHP.

I was wondering how to find the hostname when I turn my MacBook into a server by turning on the personal webpage. 

I have Apache, MySQL and PHP enabled. 

Is the hostname what you ssh into? It says that my computer's name is spiderman and it could be accessed with spiderman.local, but it doesn't seem to work. I've also tried using my IP address.
In a terminal run the command:

$ hostname


The environment variable $HOSTNAME may not necessarily be set.