I would be wary to use PHP Sessions for application-critical tasks. So far, I have had very troubling experiences with random loss of session data, as described Instead, I may use a chain of else-ifs. (On this page, kriek at jonkreik dot com states that "in most cases [a switch statement] is 15% faster [than an else-if chain]" It seems like many contributors are missing the point of using an INTERFACE. An INTERFACE is not specifically provided for abstraction. That's what a CLASS is Be very careful to define __set_state() in classes which inherit from a parent using it, as the static __set_state() call will be called for any children. If you are notnow use fgets(STDIN) to read the input. Creates connections pretty quick, works like a charm.Writing can be done using the STDOUT, or just echo. Be aware that