21:54:32 Create new PHPExcel object<br />21:54:32 Set document properties<br />21:54:32 Add some data<br />21:54:32 Rename worksheet<br />21:54:32 Clone worksheet<br />21:54:32 Rename cloned worksheet<br />21:54:32 Write to Excel2007 format<br />21:54:32 File written to 38cloneWorksheet.xlsx<br />Call time to write Workbook was 0.0107 seconds<br />21:54:32 Current memory usage: 6 MB<br />21:54:32 Peak memory usage: 6 MB<br />21:54:32 Done writing files<br />File has been created in /var/www/customs_rongma/vendor/phpoffice/phpexcel/Examples<br />