AppendChild

:::info[Note] This is a point-in-time snapshot of the API documentation from January 2026. Going forward, we will not be maintaining a public copy of these references, and recommend users to refer to the built-in signature helpers available in the Hack LSP instead for complete and up-to-date information. :::

This functions appends a child to an existing list of children or creates a new list of children

public function appendChild<T as DOMNode>(
  DOMNode $newnode,
): T;

The child can be created with e.g. DOMDocument::createElement(), DOMDocument::createTextNode() etc. or simply by using any other node.

Parameters

• DOMNode$newnode - The appended child.

Returns

• mixed - - The node added.