Class objects

I wish to open a conection as part of a class Property and then close it again as part of another.

The other functions and Properties of the class will then use the connection.

As the connection itself is a class will I be able to do this?
and if I can will there be any limits and/or specific issues to be aware of?

Thanks.

by useing private yet global to the whole class vars it seemed to work quite nicely.