21:24:30 Create new PHPExcel object<br />21:24:30 Set document properties<br />21:24:30 Add some data<br />21:24:30 Rename worksheet<br />21:24:30 Clone worksheet<br />21:24:30 Rename cloned worksheet<br />21:24:30 Write to Excel2007 format<br />21:24:30 File written to 38cloneWorksheet.xlsx<br />Call time to write Workbook was 0.0265 seconds<br />21:24:30 Current memory usage: 6 MB<br />21:24:30 Peak memory usage: 6 MB<br />21:24:30 Done writing files<br />File has been created in /home/htdocs/zhyl/vendor/PHPExcel/Examples<br />