15:21:43 Load MergeBook1 from Excel2007 file<br />Call time to read Mergebook1 was 0.0179 seconds<br />15:21:43 Current memory usage: 2 MB<br />15:21:43 Load MergeBook2 from Excel2007 file<br />Call time to read Mergebook2 was 0.0016 seconds<br />15:21:43 Current memory usage: 2 MB<br />15:21:43 Write to Excel2007 format<br />15:21:43 File written to 43mergeWorkbooks.xlsx<br />Call time to write Workbook was 0.0077 seconds<br />15:21:43 Current memory usage: 4 MB<br />15:21:43 Peak memory usage: 4 MB<br />15:21:43 Done writing file<br />File has been created in /var/www/html/examcontroller-web/vendor/phpoffice/phpexcel/Examples<br />