08:21:05 Write to Excel2007 format<br />08:21:05 File written to 33chartcreate-column.xlsx<br />08:21:05 Peak memory usage: 6 MB<br />08:21:05 Done writing file<br />File has been created in /var/www/html/lcyj_sub/ylst/laravel/vendor/phpoffice/phpexcel/Examples<br />