43 Merge workbooks

15:52:09 Load MergeBook1 from Excel2007 file
15:52:09 Read Excel2007 format from /home/factovizjh/legitrack_test/vendor/phpoffice/phpspreadsheet/samples/templates/43mergeBook1.xlsx in 0.0198 seconds
15:52:09 Load MergeBook2 from Excel2007 file
15:52:09 Read Excel2007 format from /home/factovizjh/legitrack_test/vendor/phpoffice/phpspreadsheet/samples/templates/43mergeBook2.xlsx in 0.0022 seconds
15:52:09 Write Excel2007 format to /tmp/phpspreadsheet/43_Merge_workbooks.xlsx in 0.0034 seconds
15:52:09 Write Excel5 format to /tmp/phpspreadsheet/43_Merge_workbooks.xls in 0.0077 seconds
15:52:09 Peak memory usage: 6.75MB