18:38:04 Create new PHPExcel object<br />18:38:04 Set document properties<br />18:38:04 Add data<br />18:38:04 Set data validation<br />18:38:04 Write to Excel2007 format<br />18:38:04 File written to 15datavalidation.xlsx<br />Call time to write Workbook was 0.0052 seconds<br />18:38:04 Current memory usage: 2 MB<br />18:38:04 Peak memory usage: 2 MB<br />18:38:04 Done writing file<br />File has been created in /var/www/billing.andrewpeng.net/vendor/turbo124/phpexcel/Examples<br />