Verifying the existence of a method

Is possible to verify the existence of a method without instantiating the class in php? How I do开发者_如何学编程 it?

I need to check in real time the existence of a method to build my links, but instantiate the classes is very expensive and unnecessary (don't need the classes at the time), so is_callable and method_exists are not an option.

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Or ReflectionClass::hasMethod