Payment Gateway Integration

This package adds Stripe, PayPal or Razorpay to an existing website or app so it takes payments properly: a hosted checkout or embedded payment form, and the webhook handler that marks an order paid only after the provider confirms it. It is for businesses on Laravel, Node.js, WordPress or most PHP stacks whose current setup trusts the thank-you page instead of the payment provider.

Why the webhook decides

A customer can close the tab after paying, or reach the thank-you page without paying at all. The provider's signed webhook is the only reliable signal, so the handler verifies the signature, ignores duplicates and updates the order once. Starter covers one gateway with this flow, tested end to end in test mode, plus a go-live checklist for switching keys.

Edge cases tested before launch

• Declined cards and retries, with a clear message instead of a dead end (Business).
• 3-D Secure and SCA challenges for European cards, tested with the provider's test cards (Business).
• Refunds from your own admin, customer payment emails and a payment log for your records (Business).
• Up to four gateways chosen by country, saved cards, partial refunds, payment links and a CSV export for reconciliation (Premium).

Premium ends with a security review of the payment flow: where keys are stored, what is logged and whether any card data could touch your server.

Accounts, approval and fees

The merchant account is opened by your business and approved by the provider; I never process payments through an account of mine. Each provider charges its own fees and may hold or review payouts under its terms. If you run WHMCS, the WHMCS gateway integration service covers that platform's module system specifically.