19:52:20 Write to Excel2007 format<br />19:52:20 File written to 33chartcreate-column-2.xlsx<br />19:52:20 Peak memory usage: 2 MB<br />19:52:20 Done writing file<br />File has been created in /home/webdemoo/se.webdemo258.io.vn/cms-demo/vendor/phpoffice/phpexcel/Examples<br />