13:22:52 Load MergeBook1 from Excel2007 file
Call time to read Mergebook1 was 0.0426 seconds
13:22:52 Current memory usage: 4 MB
13:22:52 Load MergeBook2 from Excel2007 file
Call time to read Mergebook2 was 0.0047 seconds
13:22:52 Current memory usage: 4 MB
13:22:52 Write to Excel2007 format
13:22:52 File written to 43mergeWorkbooks.xlsx
Call time to write Workbook was 0.0226 seconds
13:22:52 Current memory usage: 6 MB
13:22:52 Peak memory usage: 6 MB
13:22:52 Done writing file
File has been created in D:\dev\vsk\vendor\phpoffice\phpexcel\Examples