18:47:36 Load MergeBook1 from Excel2007 file<br />Call time to read Mergebook1 was 0.0031 seconds<br />18:47:36 Current memory usage: 2 MB<br />18:47:36 Load MergeBook2 from Excel2007 file<br />Call time to read Mergebook2 was 0.0018 seconds<br />18:47:36 Current memory usage: 2 MB<br />18:47:36 Write to Excel2007 format<br />18:47:36 File written to 43mergeWorkbooks.xlsx<br />Call time to write Workbook was 0.0024 seconds<br />18:47:36 Current memory usage: 2 MB<br />18:47:36 Peak memory usage: 2 MB<br />18:47:36 Done writing file<br />File has been created in /var/www/php7.3/fed/vendor/phpoffice/phpexcel/Examples<br />