43 Merge workbooks

23:08:15 Load MergeBook1 from Excel2007 file
23:08:15 Read Excel2007 format from /home/factovizjh/legitrack_test/vendor/phpoffice/phpspreadsheet/samples/templates/43mergeBook1.xlsx in 0.0342 seconds
23:08:15 Load MergeBook2 from Excel2007 file
23:08:15 Read Excel2007 format from /home/factovizjh/legitrack_test/vendor/phpoffice/phpspreadsheet/samples/templates/43mergeBook2.xlsx in 0.0021 seconds
23:08:15 Write Excel2007 format to /tmp/phpspreadsheet/43_Merge_workbooks.xlsx in 0.0035 seconds
23:08:15 Write Excel5 format to /tmp/phpspreadsheet/43_Merge_workbooks.xls in 0.0088 seconds
23:08:15 Peak memory usage: 6.5MB