20:09:01 Write to Excel2007 format<br />20:09:01 File written to 33chartcreate-bar.xlsx<br />20:09:01 Peak memory usage: 1.75 MB<br />20:09:01 Done writing file<br />File has been created in /home/hsinlung/public_html/core/vendor/phpoffice/phpexcel/Examples<br />