18:53:07 Create new PHPExcel object<br />18:53:07 Set document properties<br />18:53:07 Add data<br />18:53:07 Set data validation<br />18:53:07 Write to Excel2007 format<br />18:53:07 File written to 15datavalidation.xlsx<br />Call time to write Workbook was 0.0099 seconds<br />18:53:07 Current memory usage: 6 MB<br />18:53:07 Peak memory usage: 6 MB<br />18:53:07 Done writing file<br />File has been created in /var/www/customs_yiao/vendor/phpoffice/phpexcel/Examples<br />