19:58:09 Write to Excel2007 format<br />19:58:09 File written to 33chartcreate-line.xlsx<br />19:58:09 Peak memory usage: 1.75 MB<br />19:58:09 Done writing file<br />File has been created in /home/hsinlung/public_html/core/vendor/phpoffice/phpexcel/Examples<br />