use Binance\Client\Spot\Api\SpotRestApi;
use Binance\Client\Spot\SpotRestApiUtil;
$configurationBuilder = SpotRestApiUtil::getConfigurationBuilder();
$configurationBuilder->apiKey('apiKey')
->privateKey('file:///path/to/private.key')
->connectTimeout(500) // Connect timeout of 500ms
->readTimeout(1000); // Read timeout of 1s
$api = new SpotRestApi($configurationBuilder->build());