21:36:52 Write to Excel2007 format<br />21:36:52 File written to 33chartcreate-bar-stacked.xlsx<br />21:36:52 Peak memory usage: 5.25 MB<br />21:36:52 Done writing file<br />File has been created in /alidata/www/jiandan/vendor/phpoffice/phpexcel/Examples<br />