Calendar Tweaking medium PHP job

Hi there, I already have a script i need I just need some changes to be made and a PayPal "buy now" button integrated. It shouldn't probably take more than 10 hours from a person who knows what he's doing (or even maybe less). This job is purely programming one, there's no design involved whatsoever. So here's the story of which changes to the script t I need : 1) PayPal integrated with a dynamically-generated "buy it now" button, so people could register for the event. They should get IPN as well as an e-mail dispatched to admin. They also should be able to change amount of seats they'd like to reserve (this would probably require changing a few variables in paypal PHP SDK and pull things from Database) 2) I have an event table in the database (one out of 11) - it has the following fields. event_id type_id,calendar_id,location_id,user_id,contact_id,event_title start_time,stop_time,text_time,event_desc,approved,attachment event_active,registration_fee,seats_limit even if the event is repeated every day, there's only one entry in the table (recurring rules). So when someone pays for registration, I want to check if there's already someone registred for that day for that particular event (EID) (it can be done via GET from URL, since URLs are in this form "[login to view URL]". If not, I'd like to create a new entry in a table "reservation", deduct 1 (or more) seats from the field "seats_limit" in "event" table, and write the new value to the field "spaces_left" field in "reservation" table. If there's already reservations, then to check if there's a seat available, procceed to register the seat, and deduct that seat (seats) from total. I hope this is clear. just remember they could register for more than 1 [login to view URL] is pretty much it. I got a pretty good idea of what I need, it's just my PHP skills aren't as good yet.I'm a nice guy to work with, if I like you, there might be more jobs available. Looking forward for your bids. ## Deliverables 1) Complete and fully-functional working program(s) in executable form as well as complete source code of all work done. 2) Deliverables must be in ready-to-run condition, as follows (depending on the nature of the deliverables): a) For web sites or other server-side deliverables intended to only ever exist in one place in the Buyer's environment--Deliverables must be installed by the Seller in ready-to-run condition in the Buyer's environment. b) For all others including desktop software or software the buyer intends to distribute: A software installation package that will install the software in ready-to-run condition on the platform(s) specified in this bid request. 3) All deliverables will be considered "work made for hire" under U.S. Copyright law. Buyer will receive exclusive and complete copyrights to all work purchased. (No GPL, GNU, 3rd party components, etc. unless all copyright ramifications are explained AND AGREED TO by the buyer on the site per the coder's Seller Legal Agreement). ## Platform Linux / Apache / PHP