15:00:17 Write to Excel2007 format<br />15:00:17 File written to 33chartcreate-column-2.xlsx<br />15:00:17 Peak memory usage: 4 MB<br />15:00:17 Done writing file<br />File has been created in /var/www/billing.andrewpeng.net/vendor/turbo124/phpexcel/Examples<br />