43 Merge workbooks

09:04:38 Load MergeBook1 from Excel2007 file
09:04:38 Read Excel2007 format from /home/factovizjh/legitrack_test/vendor/phpoffice/phpspreadsheet/samples/templates/43mergeBook1.xlsx in 0.0284 seconds
09:04:38 Load MergeBook2 from Excel2007 file
09:04:38 Read Excel2007 format from /home/factovizjh/legitrack_test/vendor/phpoffice/phpspreadsheet/samples/templates/43mergeBook2.xlsx in 0.0030 seconds
09:04:38 Write Excel2007 format to /tmp/phpspreadsheet/43_Merge_workbooks.xlsx in 0.0043 seconds
09:04:38 Write Excel5 format to /tmp/phpspreadsheet/43_Merge_workbooks.xls in 0.0057 seconds
09:04:38 Peak memory usage: 2MB