43 Merge workbooks

13:38:43 Load MergeBook1 from Xlsx file
13:38:43 Read Xlsx format from /var/www/x-libs/spreadsheet/samples/templates/43mergeBook1.xlsx in 0.0049 seconds
13:38:43 Load MergeBook2 from Xlsx file
13:38:43 Read Xlsx format from /var/www/x-libs/spreadsheet/samples/templates/43mergeBook2.xlsx in 0.0014 seconds
13:38:43 Write Xlsx format to /tmp/phpspreadsheet/43_Merge_workbooks.xlsx in 0.0021 seconds
13:38:43 Write Xls format to /tmp/phpspreadsheet/43_Merge_workbooks.xls in 0.0014 seconds
13:38:43 Peak memory usage: 2MB