PHP create combat calculation system CI

I need to create a combat calculation system that would calculate the attack , defence, losses on each side and generate final report. the acual calculation can be found at: [login to view URL] I need all this generated in PHP, Codeigniter. You can ignore the topics like: "residence/palace", morale bonus". The system does not require any good layouts, except the calculation and the report itself, since im going to use it further in my other projects. This will also use other units, generated by me. and other names. PM me for more information but in the principe, it will be the same as the url over there.