public static function get_api($options = array())
 {
     if (!empty($options)) {
         $subpage = $options['subpage'];
         $callback = $options['callback'];
         switch ($subpage) {
             case 'akademik':
                 $str = array();
                 foreach (GameDev::$arrAcademics as $key => $value) {
                     $str[] = array('key' => $key, 'value' => $value);
                 }
                 break;
             case 'curang':
                 $str = GameDev::get_api_survey_result(true);
                 break;
             default:
                 $str = GameDev::get_api_survey_result();
                 break;
         }
         $result = json_encode($str);
         $output = !empty($callback) ? $callback . '(' . $result . ');' : $result;
         echo $output;
         unset($result, $output);
     }
 }