15:19:36 Write to Excel2007 format<br />15:19:36 File written to 33chartcreate-bar-stacked.xlsx<br />15:19:36 Peak memory usage: 6.25 MB<br />15:19:36 Done writing file<br />File has been created in D:\wwwroot\yx\base_admin_welcome_new_student\vendor\phpoffice\phpexcel\Examples<br />