It's a PHP SDK for Alpaca Broker API
composer require devstar/alpaca-broker-php-sdk
$this->alpaca = new Alpaca($key, $secret, $mode == 'pepper' ? true: false);
$this->alpaca->account->create($params);
$this->alpaca->asset->getAssetsAll();
$this->alpaca->trade->createOrder($account_id, $params);
$this->alpaca->funding->createTransferEntity($account_id, $params);
$this->alpaca->document->upload($account_id, $params);