08:20:48 Write to Excel2007 format<br />08:20:48 File written to 33chartcreate-multiple-charts.xlsx<br />08:20:48 Peak memory usage: 6 MB<br />08:20:48 Done writing file<br />File has been created in /var/www/html/add/jiamei/laravel/vendor/phpoffice/phpexcel/Examples<br />