PHP Manual: XMLWriter::writeDtdElement

Object-oriented style

public function XMLWriter::writeDtdElement(string $name, string $content): bool

Procedural style

function xmlwriter_write_dtd_element(XMLWriter $writer, string $name, string $content): bool

Writes a full 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().
name: The name of the DTD element.
content: The content of the element.

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::writeDtdElement