public static function setConstant($key, $value = null)
 {
     if (!empty($key)) {
         GameConstantUtil::setCacheConstant($key, $value);
         $setting = GameConstants::findByExample(DBUtils::getConnection(), GameConstants::create()->setKey_($key));
         if (!empty($setting)) {
             if (sizeof($setting) > 0) {
                 $setting = $setting[0];
                 $k = $setting->getKey_();
                 if (empty($k)) {
                     $setting = null;
                 }
             } else {
                 $setting = null;
             }
         }
         if (!empty($setting)) {
             $setting->setValue_($value);
         } else {
             $setting = GameConstants::create();
             $setting->setKey_($key);
             $setting->setValue_($value);
         }
         $setting->updateInsertToDatabase(DBUtils::getConnection());
     }
     return false;
 }