Yes some of those payday loans are real. I say some because it is possible for someone to setup a fake payday loan website and try and get your bank account and other info when you try to get a loan then they may not send you the money.
Make you research the payday loan company online and check to see how long they've been in business.
Although I would just recommend going to an offline payday loan company in your town or other town as you know they'd be legit.