[string|null$publicId = null],
[string|null$systemId = null]
): public bool
Procedural styleboolxmlwriter_start_dtd XMLWriterwriter stringqualifiedName stringnullpublicIdnull stringnullsystemIdnull
Only for procedural calls. The XMLWriter instance that is being modified. This object is returned from a call to xmlwriter_open_uri or xmlwriter_open_memory.
The qualified name of the document type to create.
The external subset public identifier.
The external subset system identifier.
Returns true on success or false on failure.
|8.0.0||writer expects an XMLWriter instance now; previously, a resource was expected.|