Replace children in fragment

# DOMDocumentFragment::replaceChildren

(PHP 8 >= 8.3.0)

DOMDocumentFragment::replaceChildren — Replace children in fragment

### 说明

public function DOMDocumentFragment::replaceChildren(DOMNode|string `...$nodes`): void

Replaces the children in the document fragment with new `nodes`.

### 参数

`nodes`

  The nodes replacing the children. Strings are automatically converted to text nodes.

### 返回值

没有返回值。

### 错误／异常

`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.

### 更新日志

版本 | 说明
--- | ---
8.3.0 | Calling this method on a node without an owner document now works. Previously this threw a DOMException with code `DOM_HIERARCHY_REQUEST_ERR`.

### 示例

示例 #1 DOMDocumentFragment::replaceChildren() example

Replaces the children with new nodes.

    <?php
    $doc = new DOMDocument;
    $doc->loadXML("<container><hello/></container>");
    $fragment = $doc->createDocumentFragment();
    $fragment->append("hello");

    $fragment->replaceChildren("beautiful", $doc->createElement("world"));

    echo $doc->saveXML($fragment);
    ?>

以上示例会输出：

    beautiful
    <world/>

### 参见

- DOMParentNode::replaceChildren() - Replace children in node
- DOMDocumentFragment::append() - Appends nodes after the last child node
- DOMDocumentFragment::prepend() - Prepends nodes before the first child node

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