gistfile1.php

    public function value(&$value, $method, $name)
    {
        // get the params
        $params = func_get_args();
        array_shift($params); // $value
        array_shift($params); // $method
        array_shift($params); // $name
        
        // set up the field name and data
        $field = 'field';
        $data = (object) [$field => $value];
        
        // prep the rule object
        $rule = $this->rule_locator->get($name);
        $rule->prep($data, $field);
        $passed = call_user_func_array([$rule, $method], $params);
        
        // retain the value and return the pass/fail result
        $value = $rule->getValue();
        return $passed;
    }