43 Merge workbooks

20:42:49 Load MergeBook1 from Xlsx file
20:42:49 Read Xlsx format from /opt/bitnami/apache/htdocs/cdn/vendor/phpoffice/phpspreadsheet/samples/templates/43mergeBook1.xlsx in 0.0045 seconds
20:42:49 Load MergeBook2 from Xlsx file
20:42:49 Read Xlsx format from /opt/bitnami/apache/htdocs/cdn/vendor/phpoffice/phpspreadsheet/samples/templates/43mergeBook2.xlsx in 0.0023 seconds
20:42:49 Write Xlsx format to /tmp/phpspreadsheet/43_Merge_workbooks.xlsx in 0.0044 seconds
20:42:49 Write Xls format to /tmp/phpspreadsheet/43_Merge_workbooks.xls in 0.0035 seconds
20:42:49 Peak memory usage: 2MB