43 Merge workbooks

08:42:03 Load MergeBook1 from Xlsx file
08:42:03 Read Xlsx format from /var/www/html/testcheckout/vendor/phpoffice/phpspreadsheet/samples/Basic/../templates/43mergeBook1.xlsx in 0.0371 seconds
08:42:03 Load MergeBook2 from Xlsx file
08:42:03 Read Xlsx format from /var/www/html/testcheckout/vendor/phpoffice/phpspreadsheet/samples/Basic/../templates/43mergeBook2.xlsx in 0.0030 seconds
08:42:03 Write Xlsx format to /tmp/phpspreadsheet/43_Merge_workbooks.xlsx in 0.0035 seconds
08:42:03 Write Xls format to /tmp/phpspreadsheet/43_Merge_workbooks.xls in 0.0087 seconds
08:42:03 Peak memory usage: 8MB