public static function phone($message = 'Must be a phone number')
    {
        // TODO: [PSI] create a predicate IsPhoneNumber in the psi library
        $check = function ($value) {
            return preg_match('/[\+0-9 ]{5,}/', $value);
        };

        return new ResultsIn\OutcomeRule($check, $message);
    }
public static function phone($message = 'Must be a phone number')
    {
        // TODO: [PSI] create a predicate IsPhoneNumber in the psi library
        $check = function ($value) {
            return preg_match('/[\+0-9 ]{5,}/', $value);
        };

        return new ResultsIn\OutcomeRule($check, $message);
    }
@param string $message

@return OutcomeRule