do fixes bug to partner login bugs

@@ -35,7 +35,6 @@ class Yohobuy
      * 
      * @var array 
      */
-
     private static $privateKeyList = array(
         'android' => 'fd4ad5fcfa0de589ef238c0e7331b585',
         'iphone' => 'a85bb0674e08986c6b115d5e3a4884fa',
@@ -212,15 +211,10 @@ class Yohobuy
             unset($data['private_key']);
         }
         if (!empty($data)) {
+            $str = http_build_query($data, null, '&');
             // 新加支持application/x-www-form-urlencoded调用方式
-	        $str = '';
-	        foreach ($data as $key => $val) {
-		        $str .= $key . '=' . $val . '&';
-	        }
-
-	        $str = rtrim($str, '&');
 
-//	        curl_setopt($ch, CURLOPT_POSTFIELDS, $data);
+            //curl_setopt($ch, CURLOPT_POSTFIELDS, $data);
             curl_setopt($ch, CURLOPT_POSTFIELDS, $str);
         }
         $result = curl_exec($ch);