01:03:49 Load MergeBook1 from Excel2007 file
Call time to read Mergebook1 was 0.0412 seconds
01:03:49 Current memory usage: 4 MB
01:03:49 Load MergeBook2 from Excel2007 file
Call time to read Mergebook2 was 0.0037 seconds
01:03:49 Current memory usage: 4 MB
01:03:49 Write to Excel2007 format
01:03:49 File written to 43mergeWorkbooks.xlsx
Call time to write Workbook was 0.0221 seconds
01:03:49 Current memory usage: 6 MB
01:03:49 Peak memory usage: 6 MB
01:03:49 Done writing file
File has been created in D:\dev\vsk\vendor\phpoffice\phpexcel\Examples