21:03:43 Load MergeBook1 from Excel2007 file<br />Call time to read Mergebook1 was 0.0447 seconds<br />21:03:43 Current memory usage: 2 MB<br />21:03:43 Load MergeBook2 from Excel2007 file<br />Call time to read Mergebook2 was 0.0066 seconds<br />21:03:43 Current memory usage: 2 MB<br />21:03:43 Write to Excel2007 format<br />21:03:43 File written to 43mergeWorkbooks.xlsx<br />Call time to write Workbook was 0.0294 seconds<br />21:03:43 Current memory usage: 2 MB<br />21:03:43 Peak memory usage: 2 MB<br />21:03:43 Done writing file<br />File has been created in D:\dev\vsk\vendor\phpoffice\phpexcel\Examples<br />