43 Merge workbooks

03:31:04 Load MergeBook1 from Excel2007 file
03:31:04 Read Excel2007 format from /home/factovizjh/legitrack_test/vendor/phpoffice/phpspreadsheet/samples/templates/43mergeBook1.xlsx in 0.0343 seconds
03:31:04 Load MergeBook2 from Excel2007 file
03:31:04 Read Excel2007 format from /home/factovizjh/legitrack_test/vendor/phpoffice/phpspreadsheet/samples/templates/43mergeBook2.xlsx in 0.0020 seconds
03:31:04 Write Excel2007 format to /tmp/phpspreadsheet/43_Merge_workbooks.xlsx in 0.0033 seconds
03:31:04 Write Excel5 format to /tmp/phpspreadsheet/43_Merge_workbooks.xls in 0.0092 seconds
03:31:04 Peak memory usage: 6.5MB