12:11:15 Write to Excel2007 format<br />12:11:15 File written to 33chartcreate-bar-stacked.xlsx<br />12:11:15 Peak memory usage: 1 MB<br />12:11:15 Done writing file<br />File has been created in /home/bjgrgao/www/cuaderno/PHPExcel_1/Examples<br />