/**
  * change the root to a fake toor
  * @param  string  fakeRoot
  * @return bool
  */
 public static function chroot($fakeRoot)
 {
     if (!$fakeRoot == '') {
         if ($fakeRoot[0] !== '/') {
             $fakeRoot = '/' . $fakeRoot;
         }
     }
     self::$fakeRoot = $fakeRoot;
 }