Help! IPhone charger started FIRE

Help! So my phone was plugged into the charger, in the wall, like normal, when I smelled something burning... it was the charger end! I immediately unplugged it to stop fire hazards, but the burning already had damaged the inside of my iphone, enough to where it works, but cannot be charged, so therefore is dead.
I went to buy a new charger, and tried it out but it didn't work. SO it is the old charger's fault. And then to my surprise, I researched this problem, and apparently there have been many other cases of it happening!! Also, Im not sure if this is correct, but maybe.. there was a recall on the type of wall chargers they give you with a new iphone a year ago, but are these the ones they are still giving now?

My phone is only four months old. So it is under warranty. What will happen when I go to the apple store? Will it be replaced immediately? For free or will I have to pay? I am leaving on a trip in two days and really need to have my phone for emergencies.
Don't get me wrong, I love apple products, but it is very frustrating when there is a risk of my apartment catching on fire, and having to buy a whole new phone because of something that is not my fault.
Thanks for your help!!