43 Merge workbooks

20:24:03 Load MergeBook1 from Xlsx file
20:24:03 Read Xlsx format from /opt/bitnami/apache/htdocs/cdn/vendor/phpoffice/phpspreadsheet/samples/templates/43mergeBook1.xlsx in 0.0039 seconds
20:24:03 Load MergeBook2 from Xlsx file
20:24:03 Read Xlsx format from /opt/bitnami/apache/htdocs/cdn/vendor/phpoffice/phpspreadsheet/samples/templates/43mergeBook2.xlsx in 0.0024 seconds
20:24:03 Write Xlsx format to /tmp/phpspreadsheet/43_Merge_workbooks.xlsx in 0.0043 seconds
20:24:03 Write Xls format to /tmp/phpspreadsheet/43_Merge_workbooks.xls in 0.0035 seconds
20:24:03 Peak memory usage: 2MB