01:00:45 Load MergeBook1 from Excel2007 file<br />Call time to read Mergebook1 was 0.0547 seconds<br />01:00:45 Current memory usage: 4 MB<br />01:00:45 Load MergeBook2 from Excel2007 file<br />Call time to read Mergebook2 was 0.0042 seconds<br />01:00:45 Current memory usage: 4 MB<br />01:00:45 Write to Excel2007 format<br />01:00:45 File written to 43mergeWorkbooks.xlsx<br />Call time to write Workbook was 0.0219 seconds<br />01:00:45 Current memory usage: 6 MB<br />01:00:45 Peak memory usage: 6 MB<br />01:00:45 Done writing file<br />File has been created in D:\dev\vsk\vendor\phpoffice\phpexcel\Examples<br />