13:53:55 Load MergeBook1 from Excel2007 file
Call time to read Mergebook1 was 0.0505 seconds
13:53:55 Current memory usage: 4 MB
13:53:55 Load MergeBook2 from Excel2007 file
Call time to read Mergebook2 was 0.0045 seconds
13:53:55 Current memory usage: 4 MB
13:53:55 Write to Excel2007 format
13:53:55 File written to 43mergeWorkbooks.xlsx
Call time to write Workbook was 0.0233 seconds
13:53:55 Current memory usage: 6 MB
13:53:55 Peak memory usage: 6 MB
13:53:55 Done writing file
File has been created in D:\dev\vsk\vendor\phpoffice\phpexcel\Examples