My iPhone 4S does not charge or connect to my Macbook Pro

When I plug my iPhone into my mac nothing happens, it does not do anything. It doesn't charge or connect to iTunes. I've tried rebooting my iPhone and mac several times and neither have worked. I've followed the steps on Apple and many other sites in order to reset my USB ports, reinstall iTunes, etc. In order to fix the problem and nothing has worked. I don't know what the source of the problem is either. I have two cords, both in normal shape, that don't work. My iPhone charges when I plug them into a wall outlet hub, so the problem isn't the cords. The last time I connected my phone to iTunes was probably a couple months ago, give or take. I feel like I've tried absolutely everything. Is it my phone, my mac? I'm trying to avoid going to Apple or Verizon in order to find the fix as it will most likely cost me money that I don't have (My screen has cracks, etc.) ANY help at all would be appreciated. I just want new music on my phone. :'

Did you check a different USB port on your computer? Have you tried another computer? It seems like it is your usb port on your computer that is the problem.