21:17:19 Write to Excel2007 format<br />21:17:19 File written to 33chartcreate-column.xlsx<br />21:17:19 Peak memory usage: 2 MB<br />21:17:19 Done writing file<br />File has been created in /home/myitalianu/itdepartment/vendor/phpoffice/phpexcel/Examples<br />