11:50:29 Write to Excel2007 format<br />11:50:29 File written to 33chartcreate-bar-stacked.xlsx<br />11:50:29 Peak memory usage: 6.25 MB<br />11:50:29 Done writing file<br />File has been created in D:\wwwroot\stu91\vendor\phpoffice\phpexcel\Examples<br />