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Informations about the package sdk

Spart PHP SDK

Official PHP SDK for the Spart payment-splitting platform.

⚠️ Verification Status

Create Intent is fully wire-validated against the live server: request/response shape (POST /api/intents, header x-spart-merchant-api-key, Result<T> envelope unwrap, intentShortId / checkoutUrl), happy path, replay idempotency, the 400 validation path, and the 401 auth path are all covered by the E2E suite (see "Running E2E tests" below).

Webhook signature scheme is wire-validated end-to-end: the SDK's SignatureVerifier and the server's WebhookSignatureBuilder agree on HMAC-SHA256 over "{t}.{body}" with header t=<unix>,v1=<lowercase-hex>. This is exercised by the SignatureVerifierTest self-sign loop in the E2E suite.

Webhook envelope DTOs (IntentEnvelopeData, OrderEnvelopeData, PaymentEnvelopeData, TestEnvelopeData) and the EventType enum values are still not wire-validated against real webhook deliveries. Capturing a real-delivery envelope is tracked as a follow-up issue and may surface field-name or shape adjustments before the webhook surface is considered stable.

Installation

Install via Composer:

Note — this package is distributed on Packagist from an automated, read-only mirror (SpartPay/spart-php-sdk) of the php/ directory in the SpartPay/spart-sdks monorepo. Please open issues and pull requests against the monorepo, not the mirror.

PHP version requirement: PHP 8.1 or higher.

Usage

Create a Client

Create an Intent

Note on line items: the server treats lineItems as descriptive metadata and does NOT reconcile them against total. There is no per-line-item price. The canonical amount the customer is charged is total (currency travels with it).

Verify a Webhook

Public Surface

All classes and interfaces under the Spart\Sdk namespace (except those under Spart\Sdk\Internal\*) are considered public API and follow semantic versioning.

Exception: Classes, interfaces, and functions under the Spart\Sdk\Internal\* namespace are not part of the public API contract and may change or be removed in any release. Do not depend on internal APIs.

License

MIT


All versions of sdk with dependencies

PHP Build Version
Package Version
Requires php Version >=8.1
ext-curl Version *
ext-json Version *
ext-hash Version *
Composer command for our command line client (download client) This client runs in each environment. You don't need a specific PHP version etc. The first 20 API calls are free. Standard composer command

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