43 Merge workbooks

20:44:26 Load MergeBook1 from Xlsx file
20:44:26 Read Xlsx format from /opt/bitnami/apache/htdocs/cdn/vendor/phpoffice/phpspreadsheet/samples/templates/43mergeBook1.xlsx in 0.0048 seconds
20:44:26 Load MergeBook2 from Xlsx file
20:44:26 Read Xlsx format from /opt/bitnami/apache/htdocs/cdn/vendor/phpoffice/phpspreadsheet/samples/templates/43mergeBook2.xlsx in 0.0025 seconds
20:44:26 Write Xlsx format to /tmp/phpspreadsheet/43_Merge_workbooks.xlsx in 0.0046 seconds
20:44:26 Write Xls format to /tmp/phpspreadsheet/43_Merge_workbooks.xls in 0.0036 seconds
20:44:26 Peak memory usage: 2MB