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<?php interface SomeInterface { public function getString() : string; } class SomeClass implements SomeInterface { public function getString() { return 'some string'; } } var_dump((new SomeClass())->getString());
Output for git.master, git.master_jit, rfc.property-hooks
Fatal error: Declaration of SomeClass::getString() must be compatible with SomeInterface::getString(): string in /in/miJ1P on line 13
Process exited with code 255.

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