I know how to create a "members only" section of a website so that any acces
s to pages within a folder have to enter a username/password which will gran
t them access for the time they are on that website.

But I just received a new client that wants to take it further. My client wa
nts to setup the website so that users will pay for their membership access.
 
This is new teritory for me and I could really use some help.

1) I can set it up so that the user will pay for their membership.  But than
 I'll need a little guidence on during that payment process, set it up so th
at they create a username/password.

2) Depending on the type of membership they purchase (monthly, annually, etc
), how will I get it so that it will expire towards the end of their members
hip based on what they purchased?

It's a simple website in the grand scheme of things, but it is something I'd
 like to have working for the client.

I am working in PHP\MYSQL enviroment.

Thanks,
Josh