43 Merge workbooks

13:15:36 Load MergeBook1 from Excel2007 file
13:15:36 Read Excel2007 format from /home/factovizjh/legitrack_test/vendor/phpoffice/phpspreadsheet/samples/templates/43mergeBook1.xlsx in 0.0655 seconds
13:15:36 Load MergeBook2 from Excel2007 file
13:15:36 Read Excel2007 format from /home/factovizjh/legitrack_test/vendor/phpoffice/phpspreadsheet/samples/templates/43mergeBook2.xlsx in 0.0023 seconds
13:15:36 Write Excel2007 format to /tmp/phpspreadsheet/43_Merge_workbooks.xlsx in 0.0034 seconds
13:15:36 Write Excel5 format to /tmp/phpspreadsheet/43_Merge_workbooks.xls in 0.0144 seconds
13:15:36 Peak memory usage: 3MB