If your charging port goes out on your iPhone 5 it is a pretty easy fix. Replacing your charging port will some times even fix your phone after it has been water damaged. Remember to go slow and be very careful. This is a 500 dollar device. If you have AppleCare or are still under warranty you should probably try those options first.
This video shows how to replace the Charging port, the Head Phone jack, and the Mic for the iPhone five.