19:47:16 Write to Excel2007 format<br />19:47:16 File written to 33chartcreate-column.xlsx<br />19:47:16 Peak memory usage: 2 MB<br />19:47:16 Done writing file<br />File has been created in /home/fasttech/gymbrain.fasttechsoft.com/vendor/phpoffice/phpexcel/Examples<br />