I am looking for a open-source expert system (hopefully php). I would like something analogous to a binary decision tree, or some kind of yes/no solution to solving problems
Problem ---> Questions -----> Solution RootNode---> Decision Nodes ----> Leaf Node
Something compatible with mySQL. Does anything exist?
Here is the first result on google: http://sourceforge.net/projects/phpexpertsystem/ I would suggest that you use prolog for that kind of stuff. It is much faster and easier. You can call SWI prolog from php. check it