43 Merge workbooks

17:24:30 Load MergeBook1 from Xlsx file
17:24:30 Read Xlsx format from /var/www/erp/spreadsheet/samples/templates/43mergeBook1.xlsx in 0.0066 seconds
17:24:30 Load MergeBook2 from Xlsx file
17:24:30 Read Xlsx format from /var/www/erp/spreadsheet/samples/templates/43mergeBook2.xlsx in 0.0038 seconds
17:24:30 Write Xlsx format to /tmp/phpspreadsheet/43_Merge_workbooks.xlsx in 0.0056 seconds
17:24:30 Write Xls format to /tmp/phpspreadsheet/43_Merge_workbooks.xls in 0.0045 seconds
17:24:30 Peak memory usage: 2MB