43 Merge workbooks

06:39:54 Load MergeBook1 from Excel2007 file
06:39:54 Read Excel2007 format from /home/factovizjh/legitrack_test/vendor/phpoffice/phpspreadsheet/samples/templates/43mergeBook1.xlsx in 0.0084 seconds
06:39:54 Load MergeBook2 from Excel2007 file
06:39:54 Read Excel2007 format from /home/factovizjh/legitrack_test/vendor/phpoffice/phpspreadsheet/samples/templates/43mergeBook2.xlsx in 0.0020 seconds
06:39:55 Write Excel2007 format to /tmp/phpspreadsheet/43_Merge_workbooks.xlsx in 0.0027 seconds
06:39:55 Write Excel5 format to /tmp/phpspreadsheet/43_Merge_workbooks.xls in 0.0025 seconds
06:39:55 Peak memory usage: 2MB