08:21:21 Create new PHPExcel object<br />08:21:21 Set document properties<br />08:21:21 Add data<br />08:21:21 Set data validation<br />08:21:21 Write to Excel2007 format<br />08:21:21 File written to 15datavalidation.xlsx<br />Call time to write Workbook was 0.0084 seconds<br />08:21:21 Current memory usage: 6 MB<br />08:21:21 Peak memory usage: 6 MB<br />08:21:21 Done writing file<br />File has been created in /var/www/html/add/jhyj/laravel/vendor/phpoffice/phpexcel/Examples<br />