diff --git a/php-binance-api.php b/php-binance-api.php
index ac001c1d..f1c0ca93 100755
--- a/php-binance-api.php
+++ b/php-binance-api.php
@@ -632,17 +632,41 @@ public function time()
     }
 
     /**
-     * exchangeInfo Gets the complete exchange info, including limits, currency options etc.
+     * exchangeInfo -  Gets the complete exchange info, including limits, currency options etc.
+     * 
+     * @link https://binance-docs.github.io/apidocs/spot/en/#exchange-information
      *
      * $info = $api->exchangeInfo();
+     * $info = $api->exchangeInfo('BTCUSDT');
+     *
+     * $arr = array('ATABUSD','BTCUSDT');
+     * $info = $api->exchangeInfo($arr);
+     *
+     * @property int $weight 10
+     *
+     * @param string|array  $symbols  (optional)  A symbol or an array of symbols, default is empty
      *
-     * @return array with error message or exchange info array
+     * @return array containing the response
      * @throws \Exception
      */
-    public function exchangeInfo()
+    public function exchangeInfo($symbols = null)
     {
         if (!$this->exchangeInfo) {
-            $arr = $this->httpRequest("v3/exchangeInfo");
+            $arr = array();
+            $arr['symbols'] = array();
+            $parameters = [];
+
+            if ($symbols) {
+                if (gettype($symbols) == "string") {
+                    $parameters["symbol"] = $symbols;
+                    $arr = $this->httpRequest("v3/exchangeInfo", "GET", $parameters);
+                }                    
+                if (gettype($symbols) == "array")  {
+                    $arr = $this->httpRequest('v3/exchangeInfo?symbols=' . '["' . implode('","', $symbols) . '"]');
+                }
+            } else {
+                $arr = $this->httpRequest("v3/exchangeInfo");
+            }
             
             $this->exchangeInfo = $arr;
             $this->exchangeInfo['symbols'] = null;
@@ -816,15 +840,17 @@ public function withdraw(string $asset, string $address, $amount, $addressTag =
             "coin" => $asset,
             "address" => $address,
             "amount" => $amount,
-            "transactionFeeFlag" => $transactionFeeFlag,
             "sapi" => true,
         ];
+
         if (is_null($addressName) === false && empty($addressName) === false) {
             $options['name'] = str_replace(' ', '%20', $addressName);
         }
         if (is_null($addressTag) === false && empty($addressTag) === false) {
             $options['addressTag'] = $addressTag;
         }
+        if ($transactionFeeFlag) $options['transactionFeeFlag'] = true;
+        
         if (is_null($network) === false && empty($network) === false) {
             $options['network'] = $network;
         }
@@ -2981,4 +3007,22 @@ public function ocoOrder(string $side, string $symbol, $quantity, $price, $stopp
 
         return $this->httpRequest("v3/order/oco", "POST", $opt, true);
     }    
+
+    /**
+    * avgPrice - get the average price of a symbol based on the last 5 minutes
+    *
+    * $avgPrice = $api->avgPrice( "ETHBTC" );
+    *
+    * @property int $weight 1
+    *
+    * @param string $symbol (mandatory) a symbol, e.g. ETHBTC
+    *
+    * @return string with symbol price
+    * @throws \Exception
+    */
+    public function avgPrice(string $symbol)
+    {
+        $ticker = $this->httpRequest("v3/avgPrice", "GET", ["symbol" => $symbol]);
+        return $ticker['price'];
+    }
 }