code: public function copy($strSource, $strDestination)
  	{
  		$this->validate($strSource, $strDestination);
  
  		return copy($this->strRootDir . '/' . $strSource, $this->strRootDir . '/' . $strDestination);
  	}
docs: Copy a file or folder
  
  @param string $strSource      The source file or folder
  @param string $strDestination The new file or folder path
  
  @return boolean True if the operation was successful