I'm pretty sure I know the answer to this already, but I want to confirm...

If someone were to book a trip from say PHL to FLL with a stop in CLT, is there any way to get on in CLT and just use the CLT-FLL portion of the ticket? The reason being that in this case it would be much less expensive to fly from PHL-FLL than from CLT-FLL (note that the destinations are just pulled out of the air).

Thanks,

Jonathan