PHP Manual: XMLWriter::startDtdElement

Object-oriented style

public function XMLWriter::startDtdElement(string $qualifiedName): bool

Procedural style

function xmlwriter_start_dtd_element(XMLWriter $writer, string $qualifiedName): bool

Starts a DTD element.

writer: 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().
qualifiedName: The qualified name of the document type to create.

Returns true on success or false on failure.

Version	Description
8.0.0	`writer` expects an XMLWriter instance now; previously, a resource was expected.

XMLWriter::startDtdElement