15:20:31 Write to Excel2007 format<br />15:20:31 File written to 33chartcreate-bar-stacked.xlsx<br />15:20:31 Peak memory usage: 3.75 MB<br />15:20:31 Done writing file<br />File has been created in /home/webiprobgm/vge/library/PHPExcel/Examples<br />