16:31:06 Load MergeBook1 from Excel2007 file<br />Call time to read Mergebook1 was 0.0408 seconds<br />16:31:06 Current memory usage: 2 MB<br />16:31:06 Load MergeBook2 from Excel2007 file<br />Call time to read Mergebook2 was 0.0036 seconds<br />16:31:06 Current memory usage: 2 MB<br />16:31:06 Write to Excel2007 format<br />16:31:06 File written to 43mergeWorkbooks.xlsx<br />Call time to write Workbook was 0.1144 seconds<br />16:31:06 Current memory usage: 2 MB<br />16:31:06 Peak memory usage: 2 MB<br />16:31:06 Done writing file<br />File has been created in D:\dev\vsk\vendor\phpoffice\phpexcel\Examples<br />