08:22:11 Write to Excel2007 format<br />08:22:11 File written to 33chartcreate-bar.xlsx<br />08:22:11 Peak memory usage: 6 MB<br />08:22:11 Done writing file<br />File has been created in /var/www/html/add/jiamei/laravel/vendor/phpoffice/phpexcel/Examples<br />