cURL authentication to paypal with php

I have a website that allows user sign up. I would like a condition of the signup to be that the user has a verified paypal account. From my understanding this can be achieved with cURL by logging into paypal and parsing the page: https://www.paypal.com/us/verified/pal=email From what I've gathered from the web the following steps are required to get into paypal: 1. Get first login page to set basic cookies 2. Post Login Data to Page [login to view URL] 3. Parse the login page to get the redirect 4. curl the URL you just parsed 5. Parse the data on paypal's email verified page cURL authentication appears to be reasonably simple: [login to view URL]:_Authentication but I can't get it going! I need someone to write this script for me please! (Preferably as a php function that I can call as a check when a user signs up). ## 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 paypal, cURL, php