CFile::getRelativePath PHP Метод

    public function getRelativePath()
    {
        $current_path = getcwd();
        if ($current_path === "/") {
            return $this->_realpath;
        } else {
            if (substr($this->_realpath, 0, strlen($current_path)) === $current_path) {
                return substr($this->_realpath, strlen($current_path));
            } else {
                throw new CFileException('Unable to resolve relative path for filesystem object.');
            }
        }
    }