21:21:09 Write to Excel2007 format<br />21:21:09 File written to 33chartcreate-multiple-charts.xlsx<br />21:21:09 Peak memory usage: 8 MB<br />21:21:09 Done writing file<br />File has been created in /home/imfmm/public_html/formation-initiale/vendor/phpoffice/phpexcel/Examples<br />