I get this error with HHVM 3.2:

Fatal error: Cannot override final method ReflectionMethod::toString() in .../vendor/zendframework/zend-code/Zend/Code/Reflection/MethodReflection.php on line 17

It seems the method MethodReflection::toString() is declared as final in HHVM.

However why override the method? Here is the code:

    public function toString()
    {
        return parent::__toString();
    }

    public function __toString()
    {
        return parent::__toString();
    }

I don't see the point of doing that, maybe those methods could be removed altogether, which would indirectly solve the problem?