---
title: "sdk/php"
description: "PHP 8.1+ server SDK for networkless JWT verification, PSR-7 request authentication, and webhook signature validation."
locale: "en"
---

> Documentation Index
> Fetch the relevant documentation index at: https://vonvon.id/sdks/llms.txt
> Use this file to discover all available pages before exploring further.

# sdk/php

## Status

Implemented and verified locally. Real IdP round-trip verification (JWKS fetch, token sign/verify against a live Vonvon instance) has not been performed yet and must be completed before production use.

Registry status: UNPUBLISHED. Install this SDK only from the repository source checkout; do not use an external package registry.

Request authentication is Bearer-only by default. An application-owned JWT cookie is read only when its exact name is configured. The opaque \_\_Host-vonvon.rt.\* Core cookie is never scanned or verified locally; exchange it by forwarding the complete Cookie header to exact same-origin POST /v1/sessions/token with redirects disabled, and accept only a response containing the token field.

## Install

PHP 8.1+ required. Core dependencies are pulled automatically by Composer.

```shell
{
  "repositories": [
{ "type": "path", "url": "../vonvon/sdk/php" }
  ],
  "require": {
"vonvon/vonvon": "dev-main"
  }
}

# composer update vonvon/vonvon
```

## Quick start

```php
use Vonvon\VonvonClient;
use Vonvon\Exception\TokenException;
use Vonvon\Exception\JwksException;

$vonvon = new VonvonClient([
'issuer'   => 'https://vonvon.id',
'audience' => 'your-client-id',
'cache'    => $psrSimpleCacheImpl, // PSR-16; null disables JWKS cache
]);

try {
$claims = $vonvon->verifyToken($jwtString);
echo $claims->sub();    // user ID
echo $claims->scope();  // "openid profile email"
echo implode(',', $claims->amr()); // "phr" / "otp"
} catch (TokenException $e) {
http_response_code(401);
} catch (JwksException $e) {
http_response_code(503);
}
```

## Authenticate a PSR-7 request

```php
$result = $vonvon->authenticateRequest($psrRequest);

if ($result->isAuthenticated()) {
$userId = $result->claims()->sub();
} else {
// $result->reason() for server-side logs only
http_response_code(401);
}

$token = $vonvon->exchangeSessionToken(
'https://app.example.com/account',
$psrRequest->getHeaderLine('Cookie'),
$sessionTokenTransport,
);
```

## Verify webhook

```php
use Vonvon\Exception\WebhookException;

try {
$payload = $vonvon->verifyWebhook($psrRequest, 'whsec_...');
$type = $payload->type();  // "user.created"
$data = $payload->data();
} catch (WebhookException $e) {
http_response_code(400);
}
```

## VonvonClient options

| Key | Default | Description |
| --- | --- | --- |
| `issuer` | required | Vonvon issuer URI |
| `audience` | `null` | Expected audience; null skips validation |
| `cache` | `null` | PSR-16 CacheInterface for JWKS caching |
| `jwks_ttl` | `3600` | JWKS cache TTL in seconds |
| `clock_leeway` | `0` | JWT clock skew tolerance in seconds |
| `cookie_name` | `disabled` | Application-owned JWT cookie name; disabled unless explicitly configured |

## VonvonClient methods

| Method | Returns | Description |
| --- | --- | --- |
| `verifyToken(string $token)` | `Claims` | Verify JWT string; throws on failure |
| `authenticateRequest(ServerRequestInterface $request)` | `AuthResult` | Authenticate PSR-7 request; does not throw |
| `verifyWebhook(ServerRequestInterface $request, string $secret)` | `WebhookPayload` | Validate webhook signature; throws on failure |
| `refreshJwks()` | `void` | Force-refresh the JWKS cache |

## Platform notes

- Uses `firebase/php-jwt` for ES256/RS256 verification. HS256 and `none` alg are rejected.
- Requires a PSR-7 request object for `authenticateRequest` and `verifyWebhook`. Convert framework-native requests with a PSR-7 bridge if needed.
- Exception hierarchy: `VonvonException` -> `TokenException`, `JwksException`, `WebhookException`.

Source: https://vonvon.id/sdks/php/index.mdx