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Tell if class implements an interface


NotionCommotion
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Both of these approaches work, however, I am surprised that there isn't a more direct approach.  is_a doesn't appear to work with interfaces and instanceof doesn't work with class names.  Is there a more proper way of doing so?  If not, is one of my  two approaches better than the other (I am assuming the in_array approach is more performant and is more intuitive at least to me).  Thanks

 

    private function classImplementsInterface1(string $class, string $interface):bool
    {
        return in_array($interface, class_implements($class));
    }
    private function classImplementsInterface2(string $class, string $interface):bool
    {
        return (new \ReflectionClass($class))->implementsInterface($interface);
    }


 

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