43 Merge workbooks

12:35:18 Load MergeBook1 from Xlsx file
12:35:18 Read Xlsx format from /var/www/x-libs/spreadsheet/samples/templates/43mergeBook1.xlsx in 0.0021 seconds
12:35:18 Load MergeBook2 from Xlsx file
12:35:18 Read Xlsx format from /var/www/x-libs/spreadsheet/samples/templates/43mergeBook2.xlsx in 0.0019 seconds
12:35:18 Write Xlsx format to /tmp/phpspreadsheet/43_Merge_workbooks.xlsx in 0.0022 seconds
12:35:18 Write Xls format to /tmp/phpspreadsheet/43_Merge_workbooks.xls in 0.0017 seconds
12:35:18 Peak memory usage: 6MB