require_once('/path/to/psa-connected-car-sdk-php/vendor/autoload.php');

<?php
require_once(__DIR__ . '/vendor/autoload.php');

// Configure API key authorization: Client ID
$config = Psa\ConnectedCar\Configuration::getDefaultConfiguration()->setApiKey('client_id', 'YOUR_API_KEY');
// Uncomment below to setup prefix (e.g. Bearer) for API key, if needed
// $config = Psa\ConnectedCar\Configuration::getDefaultConfiguration()->setApiKeyPrefix('client_id', 'Bearer');

$apiInstance = new Psa\ConnectedCar\Api\DefaultApi(
    // If you want use custom http client, pass your client which implements `GuzzleHttp\ClientInterface`.
    // This is optional, `GuzzleHttp\Client` will be used as default.
    new GuzzleHttp\Client(),
    $config
);
$locale = ""; // string | Locale. For example : fr_FR for french
$brand = ""; // string | Brand of the vehicle : C for Citroën or DS, P for Peugeot

try {
    $result = $apiInstance->fetchAlertReferential($locale, $brand);
    print_r($result);
} catch (Exception $e) {
    echo 'Exception when calling DefaultApi->fetchAlertReferential: ', $e->getMessage(), PHP_EOL;
}

?>