19:51:22 Write to Excel2007 format<br />19:51:22 File written to 33chartcreate-scatter.xlsx<br />19:51:22 Peak memory usage: 2 MB<br />19:51:22 Done writing file<br />File has been created in /home/hsinlung/public_html/core/vendor/phpoffice/phpexcel/Examples<br />