18:00:15 Write to Excel2007 format<br />18:00:15 File written to 33chartcreate-multiple-charts.xlsx<br />18:00:15 Peak memory usage: 4 MB<br />18:00:15 Done writing file<br />File has been created in /home/imevent/public_html/backup/vendor/phpoffice/phpexcel/Examples<br />