15:13:51 Create new PHPExcel object
15:13:51 Set properties
15:13:51 Add some data
15:13:51 Set header/footer
15:13:51 Add a drawing to the header
15:13:51 Set page orientation and size
15:13:51 Rename sheet
15:13:51 Write to Excel2007 format
15:13:52 Peak memory usage: 4 MB
15:13:52 Done writing file.