1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
|
interface { public function eat(); }
class Cat implements { public function eat(){ echo "cat eat"; } }
class Dog implements { public function eat(){ echo "dog eat"; } }
class Demo { public function eat(Animal $animal) { $animal->eat(); } }
$demo=new Demo;
$demo->eat(new Dog());
$demo->eat(new Cat());
|
近期评论