Help documentation-how can I correctly use phpdoc to generate development documentation?

I want to generate a document through phpdoc, but I have found two problems: 1. on the Internet, it is widely said that the parameter-o selects the generated document type {code ...} however, after execution, the system prompts that the parameter o {code...} is not supported ...} question 2: So I removed the parameter o {code ...} but all the files generated in the result are... I want to generate documents through phpdoc, But I found two problems

Question 1:

It is widely said on the Internet that parameter-o selects the generated document type

phpdoc -o HTML:frames:earthli -f test.php -t docs

However, after execution, the system prompts that parameter o is not supported.

  [RuntimeException]                 The "-o" option does not exist. 

Question 2:

So I removed the parameter o.

phpdoc -f test.php -t docs

However, all the files generated by the result are. dat.

How can I use phpdoc to generate documents correctly?

Reply content:

I want to generate documents through phpdoc, But I found two problems

Question 1:

It is widely said on the Internet that parameter-o selects the generated document type

phpdoc -o HTML:frames:earthli -f test.php -t docs

However, after execution, the system prompts that parameter o is not supported.

  [RuntimeException]                 The "-o" option does not exist. 

Question 2:

So I removed the parameter o.

phpdoc -f test.php -t docs

However, all the files generated by the result are. dat.

How can I use phpdoc to generate documents correctly?

It is widely said on the Internet that parameter-o selects the generated document type

This is for the old version. It is out of date now.

Now phpdoc uses a template to change the output format.