Many Exchanges Many Accounts

<?php

error_reporting(E_ALL);
date_default_timezone_set('UTC');
include './ccxt.php';

function create_exchange($exchange_id, $config) {

   $keys = array(
       'ids',
       'markets',
       'markets_by_id',
       'currencies',
       'currencies_by_id',
       'base_currencies',
       'quote_currencies',
       'symbols',
   );


   $exchange_class = '\\ccxt\\pro\\' . $exchange_id;
   $exchange = new $exchange_class($config);
   $markets_on_disk = "./{$exchange_id}.markets.json";

   $exchange->verbose = true; // this is a debug output to demonstrate which networking calls are being issued

   if (file_exists($markets_on_disk)) {

       $cache = json_decode(file_get_contents($markets_on_disk), true);
       foreach ($keys as $key) {
           $exchange->{$key} = $cache[$key];
       }

   } else {

       $markets = yield $exchange->load_markets();
       $cache = array();
       foreach ($keys as $key) {
           $cache[$key] = $exchange->{$key};
       }
       file_put_contents($markets_on_disk, json_encode($cache));
   }

   return $exchange;
}

$exchanges = array(
   array('binance', array(
       'id' => 'binance1',
       'apiKey' => 'YOUR_API_KEY_HERE',
       'secret' => 'YOUR_SECRET_HERE',
   )),
   array('binance', array(
       'id' => 'binance2',
       'apiKey' => 'YOUR_API_KEY_HERE',
       'secret' => 'YOUR_SECRET_HERE',
   )),
);

$loop = function($exchange_id, $config) {
   $exchange = yield create_exchange($exchange_id, $config);
   $exchange->verbose = true;
   while (true) {
       $response = yield $exchange->watch_balance();
       print('--------------------------------------------------------------');
       print($exchange->id);
       print($response);
   }
};


foreach ($exchanges as $exchange) {
   \React\Async\coroutine($loop, $exchange[0], $exchange[1]);
}