43 Merge workbooks

16:55:49 Load MergeBook1 from Xlsx file
16:55:49 Read Xlsx format from /var/www/cef/spreadsheet/samples/templates/43mergeBook1.xlsx in 0.0035 seconds
16:55:49 Load MergeBook2 from Xlsx file
16:55:49 Read Xlsx format from /var/www/cef/spreadsheet/samples/templates/43mergeBook2.xlsx in 0.0025 seconds
16:55:49 Write Xlsx format to /tmp/phpspreadsheet/43_Merge_workbooks.xlsx in 0.0033 seconds
16:55:49 Write Xls format to /tmp/phpspreadsheet/43_Merge_workbooks.xls in 0.0021 seconds
16:55:49 Peak memory usage: 2MB