eZ\Publish\Core\REST\Common\Input\Handler\Xml::castScalarValue PHP Method

    protected function castScalarValue($stringValue)
    {
        switch (true) {
            case ctype_digit($stringValue):
                return (int) $stringValue;
            case preg_match('(^[0-9\\.]+$)', $stringValue) === 1:
                return (double) $stringValue;
            case strtolower($stringValue) === 'true':
                return true;
            case strtolower($stringValue) === 'false':
                return false;
        }
        return $stringValue;
    }