21:17:25 Load MergeBook1 from Excel2007 file<br />Call time to read Mergebook1 was 0.0459 seconds<br />21:17:25 Current memory usage: 4 MB<br />21:17:25 Load MergeBook2 from Excel2007 file<br />Call time to read Mergebook2 was 0.0055 seconds<br />21:17:25 Current memory usage: 4 MB<br />21:17:25 Write to Excel2007 format<br />21:17:25 File written to 43mergeWorkbooks.xlsx<br />Call time to write Workbook was 0.0240 seconds<br />21:17:25 Current memory usage: 6 MB<br />21:17:25 Peak memory usage: 6 MB<br />21:17:25 Done writing file<br />File has been created in D:\dev\vsk\vendor\phpoffice\phpexcel\Examples<br />