I'd like to integrate PayPal payments for a website I'm developing for a client. There needs to be a membership access portal on the site, whereby users of this portal buy memberships, and my client needs the payment processing system to take a series of payments following one transaction (ie. weekly membership cost for a fixed period). Is this possible with PayPal, as I wonder if PayPal might only specialise in single payments? Thanks for any help you can provide.