19:23:21 Write to Excel2007 format<br />19:23:21 File written to 33chartcreate-column-2.xlsx<br />19:23:21 Peak memory usage: 2 MB<br />19:23:21 Done writing file<br />File has been created in /var/www/html/advancia_ci/vendor/phpoffice/phpexcel/Examples<br />