43 Merge workbooks

20:37:39 Load MergeBook1 from Xlsx file
20:37:39 Read Xlsx format from /var/www/html/testcheckout/vendor/phpoffice/phpspreadsheet/samples/Basic/../templates/43mergeBook1.xlsx in 0.0181 seconds
20:37:39 Load MergeBook2 from Xlsx file
20:37:39 Read Xlsx format from /var/www/html/testcheckout/vendor/phpoffice/phpspreadsheet/samples/Basic/../templates/43mergeBook2.xlsx in 0.0034 seconds
20:37:39 Write Xlsx format to /tmp/phpspreadsheet/43_Merge_workbooks.xlsx in 0.0037 seconds
20:37:39 Write Xls format to /tmp/phpspreadsheet/43_Merge_workbooks.xls in 0.0080 seconds
20:37:39 Peak memory usage: 4MB