43 Merge workbooks

15:37:14 Load MergeBook1 from Xlsx file
15:37:14 Read Xlsx format from /var/www/html/testcheckoutcardnet/vendor/phpoffice/phpspreadsheet/samples/Basic/../templates/43mergeBook1.xlsx in 0.0032 seconds
15:37:14 Load MergeBook2 from Xlsx file
15:37:14 Read Xlsx format from /var/www/html/testcheckoutcardnet/vendor/phpoffice/phpspreadsheet/samples/Basic/../templates/43mergeBook2.xlsx in 0.0020 seconds
15:37:14 Write Xlsx format to /tmp/phpspreadsheet/43_Merge_workbooks.xlsx in 0.0027 seconds
15:37:14 Write Xls format to /tmp/phpspreadsheet/43_Merge_workbooks.xls in 0.0020 seconds
15:37:14 Peak memory usage: 2MB