15:31:56 Write to Excel2007 format<br />15:31:56 File written to 33chartcreate-column-2.xlsx<br />15:31:56 Peak memory usage: 2 MB<br />15:31:56 Done writing file<br />File has been created in /var/www/html/petroerp3/vendor/phpoffice/phpexcel/Examples<br />