## PHP SDK
For installation and usage instructions, see [SDKs](https://www.rebilly.com/docs/dev-docs/sdks/).
All SDK code examples are included in the API reference documentation.
To use them, you must configure the `$client` as follows:

```php
$client = new Rebilly\Client([
    'apiKey' => 'YourApiKeyHere',
    'baseUrl' => 'https://api.rebilly.com',
]);
```