21:36:01 Write to Excel2007 format<br />21:36:01 File written to 33chartcreate-multiple-charts.xlsx<br />21:36:01 Peak memory usage: 5.25 MB<br />21:36:01 Done writing file<br />File has been created in /alidata/www/jiandan/vendor/phpoffice/phpexcel/Examples<br />