/home/techb158/ileadtechnology.com/SSM/vendor/phpoffice/phpspreadsheet/samples/Basic
Edit: /home/techb158/ileadtechnology.com/SSM/vendor/phpoffice/phpspreadsheet/samples/Basic/07_Reader.php (539B)
getTemporaryFilename();
$writer = new Xlsx($sampleSpreadsheet);
$writer->save($filename);
$callStartTime = microtime(true);
$spreadsheet = IOFactory::load($filename);
$helper->logRead('Xlsx', $filename, $callStartTime);
// Save
$helper->write($spreadsheet, __FILE__);