43 Merge workbooks

16:57:13 Load MergeBook1 from Excel2007 file
16:57:13 Read Excel2007 format from /home/factovizjh/legitrack_test/vendor/phpoffice/phpspreadsheet/samples/templates/43mergeBook1.xlsx in 0.0380 seconds
16:57:13 Load MergeBook2 from Excel2007 file
16:57:13 Read Excel2007 format from /home/factovizjh/legitrack_test/vendor/phpoffice/phpspreadsheet/samples/templates/43mergeBook2.xlsx in 0.0025 seconds
16:57:13 Write Excel2007 format to /tmp/phpspreadsheet/43_Merge_workbooks.xlsx in 0.0031 seconds
16:57:13 Write Excel5 format to /tmp/phpspreadsheet/43_Merge_workbooks.xls in 0.0097 seconds
16:57:13 Peak memory usage: 6.5MB