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<?php interface Vendor { public function make() : string; } class Samsung implements Vendor{ public function make() { return "This is Samsung product"; } } $vendor = new Samsung(); echo $vendor->make();
Output for git.master, git.master_jit, rfc.property-hooks
Fatal error: Declaration of Samsung::make() must be compatible with Vendor::make(): string in /in/CJV0X on line 7
Process exited with code 255.

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