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<?php class Calculation { } class TravelCalculation extends Calculation { } interface Service { public function run(Calculation $c); } class TravelService implements Service { public function run(TravelCalculation $c) { echo "Travel Service calculation"; } } $calculation = new TravelCalculation(); $service = new TravelService(); $service->run($calculation);
Output for git.master, git.master_jit, rfc.property-hooks
Fatal error: Declaration of TravelService::run(TravelCalculation $c) must be compatible with Service::run(Calculation $c) in /in/efKNW on line 15
Process exited with code 255.

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