NYCPHP Meetup

[David Sklar]

If you call, in a subclass, a static method defined in the parent class, 
"self" inside the method refers to the parent class. This is causing me 
problems, e.g. here:

class Meal {
     public static function eat() {
         $food = self::prepare();
         self::chew($food);
     }
}

class Lunch extends Meal {
     protected static function prepare() { return 'Sandwich'; }
     protected static function chew($food) { print $food; }
}

Doing:

    Lunch::eat();

Produces:

    Fatal error: Call to undefined method Meal::prepare()


Any thoughts on how to refer to the child methods in the parent class? 
Or why this is stinky OO style and what I should do instead?

Note that with non-static methods, $this works (as expected) just fine. 
The code:

class Snack {
     public function eat() {
         $food = $this->prepare();
         $this->chew($food);
     }

}

class Tea extends Snack {
     protected function prepare() { return 'Cucumber Sandwich'; }
     protected function chew($food) { print $food; }
}

$t = new Tea;
$t->eat();


Prints:

     Cucumber Sandwich



Thanks,
David