(PHP 8)
DOMParentNode::append — Appends nodes after the last child node
Appends one or many nodes to the list of children after the last child node.
nodesThe nodes to append. Strings are automatically converted to text nodes.
没有返回值。
DOM_HIERARCHY_REQUEST_ERR
Raised if this node is of a type that does not allow children of the
type of one of the passed nodes, or if the node to
put in is one of this node's ancestors or this node itself.
DOM_WRONG_DOCUMENT_ERR
Raised if one of the passed nodes was created from a different
document than the one that created this node.