DOMNode

:::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. :::

Interface Synopsis

class DOMNode {...}

Public Methods

• ->C14N(bool $exclusive = false, bool $with_comments = false, ?darray $xpath = NULL, ?varray $ns_prefixes = NULL): string
• ->C14NFile(string $uri, bool $exclusive = false, bool $with_comments = false, ?darray $xpath = NULL, ?varray $ns_prefixes = NULL): int
• ->C14Nfile(string $uri, bool $exclusive = false, bool $with_comments = false, mixed $xpath = NULL, mixed $ns_prefixes = NULL): mixed
• ->__construct(): void
• ->__debugInfo(): darray<string, mixed>
• ->appendChild<T as DOMNode>(DOMNode $newnode): T
  This functions appends a child to an existing list of children or creates a new list of children
• ->cloneNode(bool $deep = false): this
  Creates a copy of the node
• ->getLineNo(): int
  Gets line number for where the node is defined
• ->getNodePath(): mixed
• ->hasAttributes(): bool
  This method checks if the node has attributes
• ->hasChildNodes(): bool
  This function checks if the node has children
• ->insertBefore<T as DOMNode>(DOMNode $newnode, DOMNode $refnode = NULL): T
  This function inserts a new node right before the reference node
• ->isDefaultNamespace(string $namespaceuri): bool
  Tells whether namespaceURI is the default namespace
• ->isSameNode(DOMNode $node): bool
  This function indicates if two nodes are the same node
• ->isSupported(string $feature, string $version): bool
  Checks if the asked feature is supported for the specified version
• ->lookupNamespaceUri(mixed $namespaceuri): string
  Gets the namespace URI of the node based on the prefix
• ->lookupPrefix(string $namespaceURI): string
  Gets the namespace prefix of the node based on the namespace URI
• ->normalize(): void
  Normalizes the node
• ->removeChild(DOMNode $node): DOMNode
  This functions removes a child from a list of children
• ->replaceChild<T as DOMNode>(DOMNode $newchildobj, DOMNode $oldchildobj): T
  This function replaces the child oldnode with the passed new node