12:28:14 Load MergeBook1 from Excel2007 file<br />Call time to read Mergebook1 was 0.0598 seconds<br />12:28:14 Current memory usage: 4 MB<br />12:28:14 Load MergeBook2 from Excel2007 file<br />Call time to read Mergebook2 was 0.0097 seconds<br />12:28:14 Current memory usage: 4 MB<br />12:28:14 Write to Excel2007 format<br />12:28:14 File written to 43mergeWorkbooks.xlsx<br />Call time to write Workbook was 0.0291 seconds<br />12:28:14 Current memory usage: 6 MB<br />12:28:14 Peak memory usage: 6 MB<br />12:28:14 Done writing file<br />File has been created in D:\dev\sklad\vendor\phpoffice\phpexcel\Examples<br />