class someClass {
    private $success = "successn";
    function getReflection() {
        return new ReflectionFunction(function() {
            print $this->success;
        });
     }
}
$reflection = (new someClass)->getReflection();
$reflection->invoke();

Fatal error: Using $this when not in object context in Command line code on line 5

call_user_func(Closure::bind(
    $reflection->getClosure(),
    $reflection->getClosureThis(),
    $reflection->getClosureScopeClass()->name));