My PHP-based site already processes payments through PayPal. I now need the checkout flow expanded to: • add Apple Pay, Google Pay and PayPal Debit Card as options inside the existing PayPal gateway • connect to Binance for both Trading API calls and on-site wallet operations You will be working in plain PHP (no framework layer) and should be fully experienced in cryptocurrency exchanges. The job is only suitable for a developer who can actively test Apple Pay and Google Pay from their own country; if you cannot complete live test transactions please do not take the project. Deliverables 1. Updated checkout code that surfaces Apple Pay, Google Pay and PayPal Debit Card alongside the current PayPal button. 2. Secure server-side integration with Binance Trading API plus user wallet creation, deposit and withdrawal endpoints. 3. End-to-end sandbox and live tests proving successful payments on all three new PayPal methods and confirmed Binance trades/wallet actions. 4. Brief deployment notes so I can reproduce the setup on staging and production. Acceptance criteria: all payment methods visible to end users, transactions settle without errors, and Binance API actions return expected JSON responses. Please bring knowledge of PayPal REST SDK, Apple Pay JS, Google Pay API and the official Binance API library—code must be clean, documented and ready for immediate production use.