23:09:08 Create new PHPExcel object<br />23:09:08 Set document properties<br />23:09:08 Add some data<br />23:09:08 Rename worksheet<br />23:09:08 Clone worksheet<br />23:09:08 Rename cloned worksheet<br />23:09:08 Write to Excel2007 format<br />23:09:08 File written to 38cloneWorksheet.xlsx<br />Call time to write Workbook was 0.0099 seconds<br />23:09:08 Current memory usage: 4 MB<br />23:09:08 Peak memory usage: 4 MB<br />23:09:08 Done writing files<br />File has been created in /var/www/customs_yiao/vendor/phpoffice/phpexcel/Examples<br />