19:42:35 Load from Excel2007 file<br />19:42:35 Update cell data values that are displayed in the chart<br />19:42:35 Write to Excel2007 format<br />19:42:35 File written to 34chartupdate.xlsx<br />19:42:35 Peak memory usage: 2 MB<br />19:42:35 Done writing file<br />File has been created in /var/www/customs_rongma/vendor/phpoffice/phpexcel/Examples<br />