08:22:07 Write to Excel2007 format<br />08:22:07 File written to 33chartcreate-column-2.xlsx<br />08:22:07 Peak memory usage: 6 MB<br />08:22:07 Done writing file<br />File has been created in /var/www/html/lcyj_sub/ylst/laravel/vendor/phpoffice/phpexcel/Examples<br />