43 Merge workbooks

04:56:10 Load MergeBook1 from Excel2007 file
04:56:10 Read Excel2007 format from /home/factovizjh/legitrack_test/vendor/phpoffice/phpspreadsheet/samples/templates/43mergeBook1.xlsx in 0.0186 seconds
04:56:10 Load MergeBook2 from Excel2007 file
04:56:10 Read Excel2007 format from /home/factovizjh/legitrack_test/vendor/phpoffice/phpspreadsheet/samples/templates/43mergeBook2.xlsx in 0.0029 seconds
04:56:10 Write Excel2007 format to /tmp/phpspreadsheet/43_Merge_workbooks.xlsx in 0.0033 seconds
04:56:10 Write Excel5 format to /tmp/phpspreadsheet/43_Merge_workbooks.xls in 0.0045 seconds
04:56:10 Peak memory usage: 2.25MB