Transfer a node from another document

# DOMDocument::adoptNode

(PHP >= 8.3)

DOMDocument::adoptNode — Transfer a node from another document

### 说明

public function DOMDocument::adoptNode(DOMNode `$node`): DOMNode|false

Transfer a node from another document into the current document.

### 参数

`node`

  The node to transfer.

### 返回值

The node that was transferred, or `false` on error.

### 错误／异常

May throw a DOMException with the following error codes:

`DOM_NOT_SUPPORTED_ERR`

  Raised if the node type is not supported for document transfers.

### 示例

示例 #1 DOMDocument::adoptNode() example

Transfers the hello element from the first document to the second one.

    <?php
    $doc1 = new DOMDocument;
    $doc1->loadXML("<container><hello><world/></hello></container>");
    $hello = $doc1->documentElement->firstChild;

    $doc2 = new DOMDocument;
    $doc2->loadXML("<root/>");
    $doc2->documentElement->appendChild($doc2->adoptNode($hello));

    echo $doc1->saveXML() . PHP_EOL . PHP_EOL;
    echo $doc2->saveXML();
    ?>

以上示例会输出：

    <?xml version="1.0"?>
    <container/>

    <?xml version="1.0"?>
    <root><hello><world/></hello></root>

### 参见

- DOMDocument::importNode() - Import node into current document

`↑` and `↓` to navigate • `Enter` to select • `Esc` to close • `/` to open