<?phprequire__DIR__.'/../Header.php';$spreadsheet=require__DIR__.'/../templates/sampleSpreadsheet.php';// Set password against the spreadsheet file$spreadsheet->getSecurity()->setLockWindows(true);$spreadsheet->getSecurity()->setLockStructure(true);$spreadsheet->getSecurity()->setWorkbookPassword('secret');// Save$helper->write($spreadsheet,__FILE__);