View difference between Paste ID: 9vFr41Ez and 4W0ZQE5n

 <?php
 	class poloniex {
 		protected $api_key;
 		protected $api_secret;
 		protected $base_url = "https://poloniex.com/tradingApi";
 		protected $public_url = "https://poloniex.com/public";
-		protected $api_version = 1;
+
 		public function __construct($api_key, $api_secret) {
 			$this->api_key = $api_key;
 			$this->api_secret = $api_secret;
 		}
 
 		private function query($path, array $req = array()) {
 			// API settings
 			$key = $this->api_key;
 			$secret = $this->api_secret;
 
 			// generate a nonce to avoid problems with 32bit systems
 			$mt = explode(' ', microtime());
 			$req['nonce'] = $mt[1].substr($mt[0], 2, 6);
 
 			// generate the POST data string
 			$post_data = http_build_query($req, '', '&');
 			$sign = hash_hmac('sha512', $post_data, $secret);
 
 			// generate the extra headers
 			$headers = array(
 				'Key: '.$key,
 				'Sign: '.$sign,
 			);
 
 			// curl handle (initialize if required)
 			static $ch = null;
 			if (is_null($ch)) {
 				$ch = curl_init();
 				curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
 				curl_setopt($ch, CURLOPT_USERAGENT,
 					'Mozilla/4.0 (compatible; Poloniex PHP bot; '.php_uname('a').'; PHP/'.phpversion().')'
 				);
 			}
 			curl_setopt($ch, CURLOPT_URL, $this->base_url.$path);
 			curl_setopt($ch, CURLOPT_POSTFIELDS, $post_data);
 			curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
 			curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
 
 			// run the query
 			$res = curl_exec($ch);
 
 			if ($res === false) throw new Exception('Curl error: '.curl_error($ch));
 			//echo $res;
 			$dec = json_decode($res, true);
 			if (!$dec){
 				//throw new Exception('Invalid data: '.$res);
 				return false;
 			}else{
 				return $dec;
 			}
 		}
 
 		protected function retrieveJSON($URL) {
 			$opts = array('http' =>
 				array(
 					'method'  => 'GET',
 					'timeout' => 10
 				)
 			);
 			$context = stream_context_create($opts);
 			$feed = file_get_contents($URL, false, $context);
 			$json = json_decode($feed, true);
 			return $json;
 		}
 
 		public function get_balances() {
 			return $this->query('',
 				array(
 					'command' => 'returnBalances'
 				)
 			);
 		}
 
 		public function get_open_orders($pair) {
 			// reverse pair
 			$pair_arr = explode("_", $pair);
 			$pair_reverse = strtoupper($pair_arr[1]."_".$pair_arr[0]);
 
 			return $this->query('',
 				array(
 					'command' => 'returnOpenOrders',
 					'currencyPair' => $pair_reverse
 				)
 			);
 		}
 
 		public function get_my_trade_history($pair) {
 			return $this->query('',
 				array(
 					'command' => 'returnTradeHistory',
 					'currencyPair' => $pair
 				)
 			);
 		}
 
 		public function buy($pair, $rate, $amount) {
 			return $this->query('',
 				array(
 					'command' => 'buy',
 					'currencyPair' => $pair,
 					'rate' => $rate,
 					'amount' => $amount
 				)
 			);
 		}
 
 		public function sell($pair, $rate, $amount) {
 			return $this->query('',
 				array(
 					'command' => 'sell',
 					'currencyPair' => $pair,
 					'rate' => $rate,
 					'amount' => $amount
 				)
 			);
 		}
 
 		public function cancel_order($pair, $order_number) {
 			return $this->query('',
 				array(
 					'command' => 'cancelOrder',
 					'currencyPair' => $pair,
 					'orderNumber' => $order_number
 				)
 			);
 		}
 
 		public function withdraw($currency, $amount, $address) {
 			return $this->query('',
 				array(
 					'command' => 'withdraw',
 					'currency' => $currency,
 					'amount' => $amount,
 					'address' => $address
 				)
 			);
 		}
 
 		public function get_total_btc_balance() {
 			$results = $this->get_balances();
 			$prices = $this->get_ticker();
-					$pair = strtolower($coin."_btc");
+
-					$prices = $this->get_ticker($pair);
+
-					$tot_btc += $amount * $prices['last'];
+
 			foreach($results as $coin => $amount){
-					$tot_btc += $amount;
+				$pair_reverse = "BTC_".strtoupper($coin);
 
 				if($amount > 0){
 					if($coin != "BTC"){
 						$tot_btc += $amount * $prices[$pair_reverse];
 					}else{
 						$tot_btc += $amount;
 					}
 				}
 
 				// get open orders
 				if($coin != "BTC"){
 					$pair = strtoupper($coin."_btc");
 					$open_orders = $this->get_open_orders($pair);
 					foreach($open_orders as $order){
 						if($order['type'] == 'buy'){
 							$tot_btc += $order['total'];
 						}elseif($order['type'] == 'sell'){
 							$tot_btc += $order['amount'] * $prices[$pair_reverse];
 						}
 					}
 				}
 			}
 
 			return $tot_btc;
 		}
 
 		public function get_ticker($pair = "all") {
 			$prices = $this->retrieveJSON($this->public_url.'?command=returnTicker');
 			if($pair == "all"){
 				return $prices;
 			}else{
 				// reverse pair
 				$pair_arr = explode("_", $pair);
 				$pair_reverse = strtoupper($pair_arr[1]."_".$pair_arr[0]);
 				if(isset($prices[$pair_reverse])){
 					$result = array();
 					$result['last'] = $prices[$pair_reverse];
 					return $result;
 				}else{
 					return array();
 				}
 			}
 		}
 
 		public function get_trade_history($pair) {
 			$trades = $this->retrieveJSON($this->public_url.'?command=returnTradeHistory&currencyPair='.$pair);
 			return $trades;
 		}
 
 		public function get_order_book($pair) {
 			$orders = $this->retrieveJSON($this->public_url.'?command=returnOrderBook&currencyPair='.$pair);
 			return $orders;
 		}
 
 		public function get_volume() {
 			$volume = $this->retrieveJSON($this->public_url.'?command=return24hVolume');
 			return $volume;
 		}
 	}
 ?>