The moveBeforeSibling() method moves the target node before the specified sibling node in the parent NodeList.

If the specified sibling node is not a valid sibling of the target node, the method throws an exception.

Description

public AbstractNode::moveBeforeSibling(NodeInterface $siblingNode): ?NodeInterface

Parameters

siblingNode

The sibling node before which the target node will be moved.

Return Value

Returns a NodeInterface representing the sibling that the target node was moved before.

Exceptions

HIERARCHY_REQUEST_ERR

Thrown if the sibling is not a child of the target's parent.