21:15:55 Create new PHPExcel object<br />21:15:55 Set document properties<br />21:15:55 Add data<br />21:15:55 Set data validation<br />21:15:55 Write to Excel2007 format<br />21:15:55 File written to 15datavalidation.xlsx<br />Call time to write Workbook was 0.0099 seconds<br />21:15:55 Current memory usage: 4 MB<br />21:15:55 Peak memory usage: 4 MB<br />21:15:55 Done writing file<br />File has been created in /var/www/customs_rongma/vendor/phpoffice/phpexcel/Examples<br />