Kucoin Fetch All Deposit Addresses

<?php

include './ccxt.php';


date_default_timezone_set('UTC');


echo 'PHP v' . PHP_MAJOR_VERSION . '.' . PHP_MINOR_VERSION . '.' . PHP_RELEASE_VERSION . "\n";
echo 'CCXT v' . \ccxt\Exchange::VERSION . "\n";


$exchange = new \ccxt\kucoin(array(
   'apiKey' => 'YOUR_API_KEY',
   'secret' => 'YOUR_API_SECRET',
   'password' => 'YOUR_API_PASSWORD',
   'options' => array(
       'versions' => array(
           'public' => array(
               'GET' => array(
                   'currencies/{currency}' => 'v2',
               ),
           ),
       ),
   ),
));

$markets = $exchange->load_markets();

// $exchange->verbose = true; // uncomment for debugging purposes if necessary

function fetch_create_deposit_address_helper($exchange, $code, $chain = null) {
   $response = null;
   try {
       $response = $exchange->fetch_deposit_address($code, $chain ? array('chain' => strtolower($chain)) : array());
       if ((!$response['address']) || (!strlen($response['address']))) {
           throw new \ccxt\ExchangeError ($exchange->id);
       }
   } catch (\ccxt\ExchangeError $e) {
       $response = $exchange->create_deposit_address($code, $chain ? array('chain' => strtolower($chain)) : array());
   }
   return $response;
}

function fetch_create_deposit_address($exchange, $code, $chainName, $chain = null) {
   try {
       $response = fetch_create_deposit_address_helper($exchange, $code, $chain);
       echo $code, ' has a ', $chainName, ' address ', $response['address'], ($response['tag'] && strlen($response['tag'])) ? ':' . $response['tag'] : '', "\n";
       return $response;
   } catch (\ccxt\ExchangeError $e) {
       echo 'Failed to fetch or create ', $code, ' ', $chainName, ' address: ', $e->getMessage(), "\n";
   }
}

$codes = array_keys($exchange->currencies);
$results = array();
foreach ($codes as $code) {
   $response = $exchange->public_get_currencies_currency(array('currency' => $code));
   $currency = $exchange->safe_value($response, 'data');
   if ($currency)  {
       $chains = $exchange->safe_value($currency, 'chains');
       if ((count($chains) > 1) && ($code !== 'BNB')) {
           foreach ($chains as $chain) {
               echo "\n\nhere", $code, "\n\n";
               $chainName = $exchange->safe_string($chain, 'chainName');
               $address = fetch_create_deposit_address($exchange, $code, $chainName, $chainName);
               if (!isset($results[$code])) {
                   $results[$code] = array();
               }
               $results[$code][$chainName] = $address;
           }
       } else {
           $chain = $exchange->safe_value($chains, 0);
           $chainName = $exchange->safe_string($chain, 'chainName');
           $address = fetch_create_deposit_address($exchange, $code, $chainName);
           if (!isset($results[$code])) {
               $results[$code] = array();
           }
           $results[$code][$chainName] = $address;
   }
   } else {
       echo $code, ' has no addresses', "\n";
   }
}


print_r($results);