19:20:58 Create new PHPExcel object<br />19:20:58 Set document properties<br />19:20:58 Add some data<br />19:20:58 Rename worksheet<br />19:20:58 Clone worksheet<br />19:20:58 Rename cloned worksheet<br />19:20:58 Write to Excel2007 format<br />19:20:58 File written to 38cloneWorksheet.xlsx<br />Call time to write Workbook was 0.0024 seconds<br />19:20:58 Current memory usage: 1.75 MB<br />19:20:58 Peak memory usage: 1.75 MB<br />19:20:58 Done writing files<br />File has been created in /var/www/yii2/vendor/phpoffice/phpexcel/Examples<br />