43 Merge workbooks

22:05:57 Load MergeBook1 from Xlsx file
22:05:57 Read Xlsx format from /var/www/x-libs/spreadsheet/samples/templates/43mergeBook1.xlsx in 0.0033 seconds
22:05:57 Load MergeBook2 from Xlsx file
22:05:57 Read Xlsx format from /var/www/x-libs/spreadsheet/samples/templates/43mergeBook2.xlsx in 0.0015 seconds
22:05:57 Write Xlsx format to /tmp/phpspreadsheet/43_Merge_workbooks.xlsx in 0.0015 seconds
22:05:57 Write Xls format to /tmp/phpspreadsheet/43_Merge_workbooks.xls in 0.0006 seconds
22:05:57 Peak memory usage: 4MB