Stripe via PHP Using the API

A step-by-step guide to integrating Stripe into a PHP project: SDK, Checkout, webhooks and key security.

PHP remains one of the most popular languages for online stores, SaaS and marketplaces. Stripe provides an official library that simplifies creating payments, subscriptions and webhook handling without excessive boilerplate.

Setup

Install the SDK via Composer:

composer require stripe/stripe-php

Store secret and publishable keys in environment variables — never commit them to your repository. Use live keys in production and test mode on staging.

Two main payment flows

Stripe Checkout — a ready-made payment page by Stripe. Minimal code on your side, optimised UX for higher conversion.

Payment Intent API — a custom form on your site via Payment Element. Best when you need full control over checkout design.

Webhooks are essential

Don't rely only on redirect after payment. Configure an endpoint for events:

payment_intent.succeeded — successful payment confirmation
invoice.paid — subscription payment
charge.dispute.created — dispute opened

Verify webhook signatures via Stripe-Signature to protect against forged requests.

Common mistakes

Mixing test and live keys on the same environment
Missing idempotency on retry requests
Storing card data on your server (use Stripe tokens instead)

How WayOfProcessing helps

We don't just set up PHP integration — we prepare a Stripe account for your niche: verification, MCC code, warming and going live. For a fast start, we provide warmed accounts with transaction history and 24/7 Telegram support.