Iphone 4S charger not working? - 1

I got my iPhone 4S in December 2011.It worked normally until the past few days when the charger would not charge the phone. Sometimes, I had to fuss with the wire to make it charge, but now I have no luck. There are little "dents" on the top of the charger, but that was there all the time. It also won't charge on my PC. Will getting a new charger fix it? What can I do to make my iPhone start charging again?

Added (1). Well, it's dead now. Hope a new charger works.

Those earphones and chargers made by Apple are very cheap and wear out fast. I have yet to see one of my own last more than a few months. My advice is just to buy a new one.eBay has a lot of them cheap.