storing functions in a database

I would like to store my functions in a database instead of a include file, is that possible? Also if I were to store some php code in a database field, could I retrieve it and have it parsed through php and then spit out to the user instead of just having it spit out directly from the database to the user? One more question, if I were to use a java servlet and have it spit out php code, would it be possible to have the php code than be parsed by php instead of once again being spit out to the user? Thanks! I have been working on this, and this stumped me for the past couple of days. __ Kris.