43 Merge workbooks

21:05:16 Load MergeBook1 from Excel2007 file
21:05:16 Read Excel2007 format from /home/factovizjh/legitrack_test/vendor/phpoffice/phpspreadsheet/samples/templates/43mergeBook1.xlsx in 0.0768 seconds
21:05:16 Load MergeBook2 from Excel2007 file
21:05:16 Read Excel2007 format from /home/factovizjh/legitrack_test/vendor/phpoffice/phpspreadsheet/samples/templates/43mergeBook2.xlsx in 0.0036 seconds
21:05:16 Write Excel2007 format to /tmp/phpspreadsheet/43_Merge_workbooks.xlsx in 0.0043 seconds
21:05:16 Write Excel5 format to /tmp/phpspreadsheet/43_Merge_workbooks.xls in 0.0122 seconds
21:05:16 Peak memory usage: 3.25MB