classes and sessions

hi, i'm busily rewriting an exisitng calendar system that is in use at work. we're using UML as a design tool and hope to have an OO version of the system we have at the minute that wil 'fit in' with future devs. our system at the moment makes heavy use of postgresql and i am hoping to populate various object from the data in the db. our system also relies on session for passing data between pages and the site as a whole. what i need to know is this in a kind of yes or no fashion: will php allow me to create a class and then have access to the class from other pages and scripts ? Steve Brett Internal Development EMIS Ltd. "Privileged and /or Confidential information may be contained in this message. If you are not the original addressee indicated in this message (or responsible for delivery of the message to such person), you may not copy or deliver this message to anyone. In such case, please delete this message, and notify us immediately. Opinions, conclusions and other information expressed in this message are not given or endorsed by my firm or employer unless otherwise indicated by an authorised representative independently of this message." Egton Medical Information Systems Limited. Registered in England. No 2117205. Registered Office: Park House Mews, 77 Back Lane, Off Broadway, Horsforth, Leeds, LS18 4RF