Question

In the symfony2 and doctrine 2. I have this

 /**
  * Find a user by its username.
  *
  * @param string  $username
  * @return UserInterface or null if user does not exist
  */
function findUserByUsername($username);

Now i want to know that does it solve nay purpose or does it do anything in database with those @param and @return annotation or they just for documentation

Answer 1

@param is explained in the phpDocumentor docs. It has nothing to do with Symfony2.