20:09:15 Create new PHPExcel object<br />20:09:15 Set document properties<br />20:09:15 Add data<br />20:09:15 Set data validation<br />20:09:15 Write to Excel2007 format<br />20:09:15 File written to 15datavalidation.xlsx<br />Call time to write Workbook was 0.0026 seconds<br />20:09:15 Current memory usage: 2 MB<br />20:09:15 Peak memory usage: 2 MB<br />20:09:15 Done writing file<br />File has been created in /var/www/html/vendor/phpoffice/phpexcel/Examples<br />