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<?php interface Dog { public function woof(); } class Terrier implements Dog { public function woof() { echo 'woof'; } } class Staffie extends Terrier { } $dog = new Staffie(); theBestDog($dog); function theBestDog(Dog $dog){ echo 'The best dogs is ' . get_class($dog) . '. '; $dog->woof(); }
Output for git.master, git.master_jit, rfc.property-hooks
The best dogs is Staffie. woof

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