The appendChild() method adds a new node as the last child of the target node

If the given child already exists as a child of another node, it will be detached from its parent node.

If the given child is a reference to an existing node in the DOM, it will be moved from its current position to the new position.

Description

public AbstractNode::appendChild(NodeInterface $node): ?NodeInterface

Parameters

node

The node to be appended as a child.

Return Value

Returns the appended node, or null if the node could not be appended.

Exceptions

HIERARCHY_REQUEST_ERR

This DOMException is thrown if one of the following constraint is violated:

• The target node is not an instance of ElementInterface or DocumentInterface
• The target node is same as the child node
• The child node is an ancestor of the target node (which would lead to a cycle)