paypal-integration

Complete PayPal payment processing with express checkout, subscriptions, refunds, and webhook handling. Master PayPal payment integration including Express Checkout, IPN handling, recurring billing, and refund workflows. PayPal Checkout PayPal Subscriptions PayPal Payouts Client-Side (JavaScript SDK) Server-Side (REST API) - Supports one-time payments, recurring billing, and payouts via client-side Smart Buttons or server-side REST API - Includes IPN (Instant Payment Notification) webhook verification and processing for asynchronous payment updates - Provides order creation, capture, refund, and subscription management with full OAuth token handling - Handles payment status flows (completed, refunded, reversed/chargeback) with duplicate transaction prevention and error handling - Integrating PayPal as a payment option - Implementing express checkout flows - Setting up recurring billing with PayPal - Processing refunds and payment disputes - Handling PayPal webhooks (IPN) - Supporting international payments - Implementing PayPal subscriptions - One-time payments - Express checkout experience - Guest and PayPal account payments - Recurring billing - Subscription plans - Automatic renewals - Send money to multiple recipients - Marketplace and platform payments - Smart Payment Buttons - Hosted payment flow - Minimal backend code - Full control over payment flow - Custom checkout...