08:21:18 Write to Excel2007 format<br />08:21:18 File written to 33chartcreate-column.xlsx<br />08:21:18 Peak memory usage: 6 MB<br />08:21:18 Done writing file<br />File has been created in /var/www/html/lcyj_sub/mbn/laravel/vendor/phpoffice/phpexcel/Examples<br />