21:54:48 Create new PHPExcel object<br />21:54:48 Set document properties<br />21:54:48 Add data<br />21:54:48 Set data validation<br />21:54:48 Write to Excel2007 format<br />21:54:48 File written to 15datavalidation.xlsx<br />Call time to write Workbook was 0.0097 seconds<br />21:54:48 Current memory usage: 6 MB<br />21:54:48 Peak memory usage: 6 MB<br />21:54:48 Done writing file<br />File has been created in /var/www/customs_rongma/vendor/phpoffice/phpexcel/Examples<br />