LAMP PayPal Payment Integration

I’m running a LAMP-stack site (Linux, Apache, MySQL, PHP) and I need PayPal wired in for single-payment checkout. The goal is straightforward: a visitor clicks “Pay Now,” completes a PayPal payment, and both the user and I can later see that transaction in a clean history record stored in MySQL. Here’s what I expect: • Seamless single-payment flow using the current PayPal REST/Checkout SDK. • Secure server-side validation of the payment (IPN or Webhook) before order fulfilment. • MySQL tables and PHP code that log each transaction—amount, PayPal transaction ID, status, timestamp—so I can query or export them later. • Basic admin view (simple PHP page is fine) listing the stored transactions with search/filter by date or ID. • Clear, commented code and a brief README covering sandbox testing, keys/config variables, and how to move to production. Everything must fit cleanly into the existing codebase without breaking current functionality. If you’ve integrated PayPal with a LAMP site before, especially handling the data layer for transaction history, I’d love to see a quick example or demo URL so I know we’re talking the same language.

Project ID: 40230512