23:01:04 Write to Excel2007 format<br />23:01:04 File written to 33chartcreate-bar-stacked.xlsx<br />23:01:04 Peak memory usage: 4 MB<br />23:01:04 Done writing file<br />File has been created in /var/www/customs_rongma/vendor/phpoffice/phpexcel/Examples<br />