43 Merge workbooks

04:10:01 Load MergeBook1 from Xlsx file
04:10:01 Read Xlsx format from /var/www/html/testcheckout/vendor/phpoffice/phpspreadsheet/samples/Basic/../templates/43mergeBook1.xlsx in 0.0144 seconds
04:10:01 Load MergeBook2 from Xlsx file
04:10:01 Read Xlsx format from /var/www/html/testcheckout/vendor/phpoffice/phpspreadsheet/samples/Basic/../templates/43mergeBook2.xlsx in 0.0031 seconds
04:10:01 Write Xlsx format to /tmp/phpspreadsheet/43_Merge_workbooks.xlsx in 0.0148 seconds
04:10:01 Write Xls format to /tmp/phpspreadsheet/43_Merge_workbooks.xls in 0.0032 seconds
04:10:01 Peak memory usage: 2MB