$url = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid={$this->account['key']}&secret={$this->account['secret']}";
$content = ihttp_get($url);
if(is_error($content)) {
   return error('-1', '获取微信公众号授权失败, 请稍后重试！错误详情: ' . $content['message']);
}
function ihttp_request($url, $post = '', $extra = array(), $timeout = 60) {
         if (function_exists('curl_init') && function_exists('curl_exec') && $timeout > 0) {
      $ch = ihttp_build_curl($url, $post, $extra, $timeout);
      if (is_error($ch)) {
         return $ch;
      }
      $data = curl_exec($ch);
      $status = curl_getinfo($ch);
      $errno = curl_errno($ch);
      $error = curl_error($ch);
      curl_close($ch);
      if ($errno || empty($data)) {
         return error($errno, $error);
      } else {
         return ihttp_response_parse($data);
      }
   }
   $urlset = ihttp_parse_url($url, true);
   if (!empty($urlset['ip'])) {
      $urlset['host'] = $urlset['ip'];
   }

   $body = ihttp_build_httpbody($url, $post, $extra);

   if ($urlset['scheme'] == 'https') {
      $fp = ihttp_socketopen('ssl://' . $urlset['host'], $urlset['port'], $errno, $error);
   } else {
      $fp = ihttp_socketopen($urlset['host'], $urlset['port'], $errno, $error);
   }
   stream_set_blocking($fp, $timeout > 0 ? true : false);
   stream_set_timeout($fp, ini_get('default_socket_timeout'));
   if (!$fp) {
      return error(1, $error);
   } else {
      fwrite($fp, $body);
      $content = '';
      if($timeout > 0) {
         while (!feof($fp)) {
            $content .= fgets($fp, 512);
         }
      }
      fclose($fp);
      return ihttp_response_parse($content, true);
   }
}


function ihttp_get($url) {
   return ihttp_request($url);
}