(PHP 5, PHP 7, PHP 8)
DOMNode::replaceChild — Replaces a child
public DOMNode::replaceChild(DOMNode $node, DOMNode $child): DOMNode|false
This function replaces the child child with the passed new node. If the node is already a child it will not be added a second time. If the replacement succeeds the old node is returned.
nodeThe new node. It must be a member of the target document, i.e. created by one of the DOMDocument->createXXX() methods or imported in the document by DOMDocument::importNode.
childThe old node.
The old node or false if an error occur.
DOM_NO_MODIFICATION_ALLOWED_ERRRaised if this node is readonly or if the previous parent of the node being inserted is readonly.
DOM_HIERARCHY_REQUEST_ERR Raised if this node is of a type that does not allow children of the type of the node node, or if the node to put in is one of this node's ancestors or this node itself.
DOM_WRONG_DOCUMENT_ERR Raised if node was created from a different document than the one that created this node.
DOM_NOT_FOUND_ERR Raised if child is not a child of this node.
© 1997–2025 The PHP Documentation Group
Licensed under the Creative Commons Attribution License v3.0 or later.
https://www.php.net/manual/en/domnode.replacechild.php