How do I get the name of the constant?
===

    const
    
      STUFF      = 1,
      MORE_STUFF = 3,
      ...
      LAST_STUFF = 45;  
    
    
    function($id = self::STUFF){
      if(defined('self::'.$id)){
        // here how do I get the name of the constant?
        // eg "STUFF"
      }
    }


Can I get it without a huge case statement?