$config = parse_ini_file("dash.conf");
$port = $config['testnet']==1?'19998':'9998';
$dash = new DASHWrapper("http://{$config['rpcuser']}:{$config['rpcpassword']}@127.0.0.1:{$port}/");
$tx = $dash->getrawtransaction($txId, true);

/**
 * @method getrawtransaction(string $tx, bool $verbose)
 * @method validateaddress(string $address)
 * @method getaddressbalance(array $addresses)
 */
class DASHWrapper {

  private $ch;

  public function __construct(string $connection) {
    $this->ch = curl_init($connection);

    if (!$this->ch) {
      throw new Exception('Не удалось подключиться к демону');
    }

    curl_setopt($this->ch, CURLOPT_RETURNTRANSFER, true);
    curl_setopt($this->ch, CURLOPT_HTTPHEADER, ['Content-Type: text/plain']);
    curl_setopt($this->ch, CURLOPT_POST, true);
  }

  public function __call($name, $arguments) {
    $params = json_encode([
      "jsonrpc" => "1.0",
      "id" => "PHP-wrapper",
      "method" => $name,
      "params" => $arguments,
    ]);

    curl_setopt($this->ch, CURLOPT_POSTFIELDS, $params);
    $result = curl_exec($this->ch);

    if (empty($result)) {
      throw new Exception(curl_error($this->ch));
    }

    $response = json_decode($result, true);

    return !empty($response['result']) ? $response['result'] : "{$response['error']['message']}\n";
  }
}