10:11:22 Write to Excel2007 format<br />10:11:22 File written to 33chartcreate-column.xlsx<br />10:11:22 Peak memory usage: 4 MB<br />10:11:22 Done writing file<br />File has been created in /var/www/billing.andrewpeng.net/vendor/turbo124/phpexcel/Examples<br />