09:28:13 Write to Excel2007 format<br />09:28:13 File written to 33chartcreate-column.xlsx<br />09:28:13 Peak memory usage: 6 MB<br />09:28:13 Done writing file<br />File has been created in /var/www/html/add/wm/laravel/vendor/phpoffice/phpexcel/Examples<br />