11:28:18 Create new PHPExcel object<br />11:28:18 Set document properties<br />11:28:18 Add some data<br />11:28:18 Rename worksheet<br />11:28:18 Clone worksheet<br />11:28:18 Rename cloned worksheet<br />11:28:18 Write to Excel2007 format<br />11:28:18 File written to 38cloneWorksheet.xlsx<br />Call time to write Workbook was 0.0039 seconds<br />11:28:18 Current memory usage: 2 MB<br />11:28:18 Peak memory usage: 2 MB<br />11:28:18 Done writing files<br />File has been created in /home/autourdey/invoice/vendor/phpoffice/phpexcel/Examples<br />