/**
  * qqLogin
  */
 public function qqLogin()
 {
     $state = md5(rand(5, 10));
     Yii::app()->session->add('qq_state', $state);
     $qqService = new qqConnectAuthV2(QQ_APPID, QQ_APPKEY);
     $this->qq_code_url = $qqService->getAuthorizeURL(QQ_CALLBACK_URL, 'code', $state);
     Yii::app()->session->add('back_url', $this->back_url . '?state=' . $state);
 }
 /**
  * @ignore
  */
 public static function build_http_query_multi($params)
 {
     if (!$params) {
         return '';
     }
     uksort($params, 'strcmp');
     $pairs = array();
     self::$boundary = $boundary = uniqid('------------------');
     $MPboundary = '--' . $boundary;
     $endMPboundary = $MPboundary . '--';
     $multipartbody = '';
     foreach ($params as $parameter => $value) {
         if (in_array($parameter, array('pic', 'image')) && $value[0] == '@') {
             $url = ltrim($value, '@');
             $content = file_get_contents($url);
             $array = explode('?', basename($url));
             $filename = $array[0];
             $multipartbody .= $MPboundary . "\r\n";
             $multipartbody .= 'Content-Disposition: form-data; name="' . $parameter . '"; filename="' . $filename . '"' . "\r\n";
             $multipartbody .= "Content-Type: image/unknown\r\n\r\n";
             $multipartbody .= $content . "\r\n";
         } else {
             $multipartbody .= $MPboundary . "\r\n";
             $multipartbody .= 'content-disposition: form-data; name="' . $parameter . "\"\r\n\r\n";
             $multipartbody .= $value . "\r\n";
         }
     }
     $multipartbody .= $endMPboundary;
     return $multipartbody;
 }