21:54:32 Load from Excel2007 file<br />21:54:32 Update cell data values that are displayed in the chart<br />21:54:32 Write to Excel2007 format<br />21:54:32 File written to 34chartupdate.xlsx<br />21:54:32 Peak memory usage: 6 MB<br />21:54:32 Done writing file<br />File has been created in /var/www/customs_rongma/vendor/phpoffice/phpexcel/Examples<br />