/**
  * Setup the Path variable
  *
  * @param string $base base path
  * @return void
  */
 protected static function _setPath($base = null)
 {
     if (empty($base)) {
         self::$path = '/';
         return;
     }
     if (strpos($base, 'index.php') !== false) {
         $base = str_replace('index.php', '', $base);
     }
     if (strpos($base, '?') !== false) {
         $base = str_replace('?', '', $base);
     }
     self::$path = $base;
 }