43 Merge workbooks

16:23:25 Load MergeBook1 from Xlsx file
16:23:25 Read Xlsx format from /var/www/x-libs/spreadsheet/samples/templates/43mergeBook1.xlsx in 0.0066 seconds
16:23:25 Load MergeBook2 from Xlsx file
16:23:25 Read Xlsx format from /var/www/x-libs/spreadsheet/samples/templates/43mergeBook2.xlsx in 0.0032 seconds
16:23:25 Write Xlsx format to /tmp/phpspreadsheet/43_Merge_workbooks.xlsx in 0.0028 seconds
16:23:25 Write Xls format to /tmp/phpspreadsheet/43_Merge_workbooks.xls in 0.0009 seconds
16:23:25 Peak memory usage: 2MB