code: public function rmdir($strDirectory)
  	{
  		$this->validate($strDirectory);
  
  		if (!file_exists($this->strRootDir . '/' . $strDirectory))
  		{
  			return true;
  		}
  
  		return rmdir($this->strRootDir. '/' . $strDirectory);
  	}
docs: Remove a directory
  
  @param string $strDirectory The directory name
  
  @return boolean True if the operation was successful