16:11:11 Write to Excel2007 format<br />16:11:11 File written to 33chartcreate-bar-stacked.xlsx<br />16:11:11 Peak memory usage: 6 MB<br />16:11:11 Done writing file<br />File has been created in /var/www/customs_rongma/vendor/phpoffice/phpexcel/Examples<br />