Gateio Swaps

<?php

include './ccxt.php';

date_default_timezone_set('UTC');

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

// Example 1: Creating and canceling a linear future (limit) order
try {
   $markets = $exchange->load_markets ();
   $symbol = 'LTC/USDT:USDT';
   $type = 'limit';
   $side = 'buy';
   $amount = 1;
   $price = 55;

   // placing an order
   $order = $exchange->create_order ($symbol, $type, $side, $amount, $price);
   var_dump ($order);

   // listing open orders
   $open_orders = $exchange->fetch_open_orders($symbol);
   var_dump($open_orders);

   // cancel order
   $cancel = $exchange->cancel_order ($order['id'], $symbol);
   var_dump ($cancel);

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

// Example 2: Creating and canceling a linear future (stop-limit) order with leverage
try {
   $markets = $exchange->load_markets ();
   $symbol = 'LTC/USDT:USDT';
   $type = 'limit';
   $side = 'buy';
   $amount = 1;
   $price = 55;
   $stop_price = 130;

   $params = array (
       'stopPrice' => $stop_price,
   );

   // set leverage
   $leverage = $exchange->set_leverage(3, $symbol);
   var_dump($leverage);

   // placing an order
   $order = $exchange->create_order ($symbol, $type, $side, $amount, $price, $params);
   var_dump ($order);

   // listing open orders
   $open_orders = $exchange->fetch_open_orders($symbol);
   // var_dump($open_orders);

   // cancel order
   $cancelParams = array (
       'isStop' => true,
   );
   $cancel = $exchange->cancel_order ($order['id'], $symbol, $cancelParams);
   var_dump ($cancel);

   // reset leverage
   $leverage = $exchange->set_leverage(1, $symbol);
   var_dump($leverage);

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