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# rmyndharis/openwa
Official PHP SDK for the [OpenWA](https://github.com/rmyndharis/OpenWA) WhatsApp API Gateway.
A synchronous client built on [Guzzle](https://docs.guzzlephp.org/), PSR-4 autoloaded.
## Install
```bash
composer require rmyndharis/openwa
```
Requires PHP 8.1+ and Guzzle 7. The namespace is `OpenWA\`.
## Usage
```php
<?php
require 'vendor/autoload.php';
use OpenWA\Client;
$client = new Client([
'baseUrl' => 'https://your-gateway.example.com',
'apiKey' => 'owa_k1_…',
]);
$client->sessions->start('my-session');
$result = $client->messages->sendText('my-session', [
'chatId' => '628123456789@c.us',
'text' => 'Hello from the OpenWA PHP SDK!',
]);
echo $result['messageId'];
```
For tests, inject a Guzzle client whose handler is a `MockHandler` — no network, no global state:
```php
$client = new Client([
'baseUrl' => 'http://x',
'apiKey' => 'k',
'httpClient' => $mockGuzzleClient,
]);
```
## Messaging
> Voice notes: pass `'ptt' => true` to `sendAudio` to send a real WhatsApp voice note (PTT). Supply `audio/ogg; codecs=opus` audio for reliable playback; the server defaults the mimetype to that when `ptt` is set without one.
## Errors
A non-2xx response throws a typed `OpenWA\Exceptions\OpenWAApiException` subclass —
`OpenWAAuthException` (401), `OpenWAForbiddenException` (403), `OpenWANotFoundException` (404),
`OpenWAConflictException` (409), `OpenWARateLimitException` (429),
`OpenWANotImplementedException` (501) — each exposing `getStatus()` and the parsed `getBody()`.
A timeout throws `OpenWATimeoutException`.
```php
use OpenWA\Exceptions\OpenWANotFoundException;
try {
$client->sessions->get('missing');
} catch (OpenWANotFoundException $e) {
echo $e->getStatus(); // 404
}
```
## Notes
- **Use HTTPS in production** — the API key is sent as `X-API-Key` and is bearer-equivalent.
- The SDK does **not** retry, and **never follows redirects** (so the key is never re-sent to
a redirect target). Path segments are percent-encoded; a base-URL path prefix (e.g. behind a
reverse proxy) is preserved.
- Escape hatch for endpoints the SDK does not wrap:
`$client->request($method, $path, $query, $body)`.
## License
MIT