Overtrue\Validation\Validator::validateRequiredIf PHP Method

    protected function validateRequiredIf($attribute, $value, $parameters)
    {
        $this->requireParameterCount(2, $parameters, 'required_if');
        $data = array_get($this->data, $parameters[0]);
        $values = array_slice($parameters, 1);
        if (in_array($data, $values)) {
            return $this->validateRequired($attribute, $value);
        }
        return true;
    }