Object oriented style:
class XMLWriter {Procedural style:
bool xmlwriter_start_dtd ( resource xmlwriter, string qualifiedName [, string publicId [, string systemId]] )Starts a DTD.
xmlwriter
Apenas para chamadas de procedimentos. O recurso XMLWriter resource que esta sendo modificado. Este recurso vem de uma chamada a xmlwriter_open_uri() ou xmlwriter_open_memory().
qualifiedName
The qualified name of the document type to create.
publicId
The external subset public identifier.
systemId
The external subset system identifier.