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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 $dog){ echo 'The best dogs is ' . get_class_name($dog); $dog->woof(); }
Output for git.master, git.master_jit, rfc.property-hooks
Fatal error: Uncaught Error: Call to undefined function get_class_name() in /in/8XcMJ:21 Stack trace: #0 /in/8XcMJ(18): theBestDog(Object(Staffie)) #1 {main} thrown in /in/8XcMJ on line 21
Process exited with code 255.

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