What's wrong with my iPhone?

My phone was dying and I tried to charge my phone with a charger that didn't work. I'm not sure what happened after but my phone was acting up. I then charged my phone with a different charger and it took hours to reach 60%. I unplugged it before I went to sleep and when I woke up, my phone went from 60% to 0%. It's unexplainable. I rarely use my phone when it's charging and never leave it charging over night. I'm thinking the charger that didn't work did something to my phone.

Help. Any advice.