Priority Question!

[Novo]

How would I be able to make one function prioritized over another function?

PHP Code:

// Class Human
public function getDance()
  {
  return "human_"@ races::getDance();
  } 


PHP Code:

// Class Races
public function getDance()
  {
  return "dance";
  } 


How can I favor the "getDance" function in human over the "getDance" function in Races?