php文档get_result歧义

I have a simple question that I'm wondering about. I was reading through the php documentation on page http://php.net/manual/en/mysqli-stmt.get-result.php regarding the get_result() function.

It says:

Returns a resultset for successful SELECT queries, or FALSE for other DML queries or on failure. The mysqli_errno() function can be used to distinguish between the two types of failure.

What is confusing for me is, if the select statement returns an empty set, will it return a FALSE too? Or a TRUE result with a null set?

Thank You for your time...