11:28:30 Write to Excel2007 format<br />11:28:30 File written to 33chartcreate-bar-stacked.xlsx<br />11:28:30 Peak memory usage: 4 MB<br />11:28:30 Done writing file<br />File has been created in /home/imevent/public_html/backup/vendor/phpoffice/phpexcel/Examples<br />