This function is EXPERIMENTAL. The behaviour of this function, the name of this function, and anything else documented about this function may change without notice in a future release of PHP. Use this function at your own risk.
Test to see if this type is open.
TRUE if this type is open, otherwise returns
SDO_DataObject whose type is open can have properties added to them which
are not described by the type. This capability is used to support
working with XML documents whose schema support open content, such as that
defined by an <xsd:any> element.