21:20:25 Load from Excel2007 file<br />21:20:25 Update cell data values that are displayed in the chart<br />21:20:25 Write to Excel2007 format<br />21:20:25 File written to 34chartupdate.xlsx<br />21:20:25 Peak memory usage: 2 MB<br />21:20:25 Done writing file<br />File has been created in G:\myserver\www\shopee\PHPExcel-1.8\Examples<br />