18:59:20 Create new PHPExcel object<br />18:59:20 Set document properties<br />18:59:20 Add some data<br />18:59:20 Rename worksheet<br />18:59:20 Clone worksheet<br />18:59:20 Rename cloned worksheet<br />18:59:20 Write to Excel2007 format<br />18:59:20 File written to 38cloneWorksheet.xlsx<br />Call time to write Workbook was 0.0219 seconds<br />18:59:20 Current memory usage: 2 MB<br />18:59:20 Peak memory usage: 2 MB<br />18:59:20 Done writing files<br />File has been created in /home/htdocs/zhyl/vendor/PHPExcel/Examples<br />