How can I open an excel file generated by phpexcel with a password?

The password required for opening the excel file generated by phpexcel is as follows. Some solutions on the Internet can be searched as follows: PHPcode $ objPHPExcel = newPHPExcel (); $ objPHPExcel-& gt; getSecurity ()-& gt; setLockWindows (true ); $ How does objPHPExcel use a password to open an excel file generated by phpexcel?
As the question.
Some solutions on the Internet can be searched as follows:

PHP code

  $ ObjPHPExcel = new PHPExcel (); $ objPHPExcel-> getSecurity ()-> setLockWindows (true); $ objPHPExcel-> getSecurity ()-> setLockStructure (true ); $ objPHPExcel-> getSecurity ()-> setWorkbookPassword ("abc"); $ objWriter = new PHPExcel_Writer_Excel5 ($ objPHPExcel); $ objWriter-> setTempDir (". "); $ objWriter-> save (" abc.xls ");

However, the generated file can still be opened directly without a password. Who knows how to implement it?

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