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<?php interface ConfigurationProvider { public function getConfig() : array; } final class ConfigurationProviderImplementing implements ConfigurationProvider { public function getConfig() : array { return []; } } $provider = new ConfigurationProviderNonImplementing(); var_dump(! $provider instanceof ConfigProviderInterface && ! is_callable([$provider, 'getConfig']));
Output for git.master, git.master_jit, rfc.property-hooks
Fatal error: Uncaught Error: Class "ConfigurationProviderNonImplementing" not found in /in/X4c7v:17 Stack trace: #0 {main} thrown in /in/X4c7v on line 17
Process exited with code 255.

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