21:39:51 Write to Excel2007 format<br />21:39:51 File written to 33chartcreate-multiple-charts.xlsx<br />21:39:51 Peak memory usage: 4 MB<br />21:39:51 Done writing file<br />File has been created in /var/www/html/IDEE/vendor/phpoffice/phpexcel/Examples<br />