15:19:37 Create new PHPExcel object<br />15:19:37 Set document properties<br />15:19:37 Add data<br />15:19:37 Set data validation<br />15:19:37 Write to Excel2007 format<br />15:19:37 File written to 15datavalidation.xlsx<br />Call time to write Workbook was 0.0319 seconds<br />15:19:37 Current memory usage: 5.75 MB<br />15:19:37 Peak memory usage: 5.75 MB<br />15:19:37 Done writing file<br />File has been created in D:\wwwroot\yx\base_admin_welcome_new_student\vendor\phpoffice\phpexcel\Examples<br />