22:29:28 Write to Excel2007 format<br />22:29:28 File written to 33chartcreate-column.xlsx<br />22:29:28 Peak memory usage: 6 MB<br />22:29:28 Done writing file<br />File has been created in /var/www/html/examcontroller-web/vendor/phpoffice/phpexcel/Examples<br />