21:13:18 Create new PHPExcel object<br />21:13:18 Set document properties<br />21:13:18 Add some data<br />21:13:18 Rename worksheet<br />21:13:18 Clone worksheet<br />21:13:18 Rename cloned worksheet<br />21:13:18 Write to Excel2007 format<br />21:13:18 File written to 38cloneWorksheet.xlsx<br />Call time to write Workbook was 0.0143 seconds<br />21:13:18 Current memory usage: 6 MB<br />21:13:18 Peak memory usage: 6 MB<br />21:13:18 Done writing files<br />File has been created in /var/www/customs_rongma/vendor/phpoffice/phpexcel/Examples<br />