Huobi Swaps

<?php

include './ccxt.php';

date_default_timezone_set('UTC');

$exchange = new \ccxt\huobipro(array(
   'apiKey' => 'YOUR_API_KEY', // ←------------ replace with your keys
   'secret' => 'YOUR_SECRET_KEY',
   // 'verbose' => true, // uncomment if debug output is needed
));

try {

   $markets = $exchange->load_markets ();

   // creating a linear swap (limit) order
   $symbol = 'ADA/USDT:USDT';
   $order_type = 'limit';
   $side = 'buy';
   $offset = 'open';
   $leverage = 1;
   $amount = 1;
   $price = 1;

   $params = array (
       'offset' => $offset,
       'lever_rate' => $leverage,
   );

   $order = $exchange->create_order ($symbol, $order_type, $side, $amount, $price, $params);
   var_dump ($order['id']);

} catch (\ccxt\NetworkError $e) {
   echo '[Network Error] ' . $e->getMessage() . "\n";
} catch (\ccxt\ExchangeError $e) {
   echo '[Exchange Error] ' . $e->getMessage() . "\n";
} catch (Exception $e) {
   echo '[Error] ' . $e->getMessage() . "\n";
}

?>