21:41:29 Load from Excel2007 file<br />21:41:29 Update cell data values that are displayed in the chart<br />21:41:29 Write to Excel2007 format<br />21:41:29 File written to 34chartupdate.xlsx<br />21:41:29 Peak memory usage: 3.25 MB<br />21:41:29 Done writing file<br />File has been created in /var/www/igeotrack/vendor/phpoffice/phpexcel/Examples<br />