Yes, the syntax with block comments and tags like @author
and @copyright
is standardized, it's called PHPDoc.
You can find a good starting reference here.
The main advantage of using this standardized way of markup for code metadata is that you can then use standardized tools like PHPDocumentor to automatically generate documentation like this. Another is that advanced IDEs like PHPStorm can parse the docblocks to provide autocomplete and other code completion functionality, and even smart refactoring tools.