src/LightSaml/SamlConstants.php
public static function isNsValid($value)
    {
        static $arr = array(
            self::NS_PROTOCOL,
            self::NS_METADATA,
            self::NS_ASSERTION,
            self::NS_XMLDSIG,
        );

        return in_array($value, $arr);
    }
public static function isNsValid($value)
    {
        static $arr = array(
            self::NS_PROTOCOL,
            self::NS_METADATA,
            self::NS_ASSERTION,
            self::NS_XMLDSIG,
        );

        return in_array($value, $arr);
    }
@param string $value

@return bool