15:00:30 Write to Excel2007 format<br />15:00:30 File written to 33chartcreate-column-2.xlsx<br />15:00:30 Peak memory usage: 6.75 MB<br />15:00:30 Done writing file<br />File has been created in /var/www/loyalworld_160326.bk/loyalworld/vendor/phpoffice/phpexcel/Examples<br />