14:00:57 Create new PHPExcel object<br />14:00:57 Set document properties<br />14:00:57 Add data<br />14:00:57 Set data validation<br />14:00:57 Write to Excel2007 format<br />14:00:57 File written to 15datavalidation.xlsx<br />Call time to write Workbook was 0.0085 seconds<br />14:00:57 Current memory usage: 6 MB<br />14:00:57 Peak memory usage: 6 MB<br />14:00:57 Done writing file<br />File has been created in /var/www/yii2/vendor/phpoffice/phpexcel/Examples<br />