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Paste_Image.png
<?php
interface ICanEat
{
public function eat($food);
}
class Human implements ICanEat
{
public function eat($food)
{
echo "Human eating " . $food . "<br/>";
}
}
class Animal implements ICanEat
{
public function eat($food)
{
echo "Animal eating " . $food . "<br/>";
}
}
$obj = new Human();
$monkey = new Animal();
function checkEat($obj)
{
if ($obj instanceof ICanEat) {
$obj->eat('food');
} else {
echo "The obj can't eat" . "<br/>";
}
}
checkEat($monkey);//Animal eating food
checkEat($obj);
interface iCanPee extends ICanEat
{
public function pee();
}
?>
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