DOMNode::insertBefore
(PHP 5, PHP 7, PHP 8)
DOMNode::insertBefore — Adds a new child before a reference node
說明
This function inserts a new node right before the reference node. If you plan to do further modifications on the appended child you must use the returned node.
When using an existing node it will be moved.
參數
-
node -
The new node.
-
child -
The reference node. If not supplied,
nodeis appended to the children.
返回值
The inserted node.
錯誤／異常
-
DOM_NO_MODIFICATION_ALLOWED_ERR -
Raised 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
nodenode, or if the node to append is one of this node's ancestors or this node itself. -
DOM_WRONG_DOCUMENT_ERR -
Raised if
nodewas created from a different document than the one that created this node. -
DOM_NOT_FOUND -
Raised if
childis not a child of this node.