Get a SimpleXMLElement object from an XML or HTML node

# simplexml_import_dom

(PHP 5, PHP 7, PHP 8)

simplexml_import_dom — Get a `SimpleXMLElement` object from an XML or HTML node

### 说明

function simplexml_import_dom(object `$node`, ?string `$class_name` = `SimpleXMLElement::class`): ?SimpleXMLElement

This function takes a node of a DOM document and makes it into a SimpleXML node. This new object can then be used as a native SimpleXML element.

### 参数

`node`

  A DOM Element node

`class_name`

  You may use this optional parameter so that simplexml_import_dom() will return an object of the specified class. That class should extend the SimpleXMLElement class.

### 返回值

Returns a SimpleXMLElement or `null` on failure.

### 错误／异常

Throws a TypeError when passed a non-XML or non-HTML `node`.

### 更新日志

版本 | 说明
--- | ---
8.4.0 | Added support for Dom\Document.
8.4.0 | This function now throws a TypeError instead of a ValueError when passed a non-XML or non-HTML `node`.

### 示例

示例 #1 Importing a DOMDocument

    <?php
    $dom = new DOMDocument;
    $dom->loadXML('<books><book><title>blah</title></book></books>');
    if (!$dom) {
        echo 'Error while parsing the document';
        exit;
    }

    $s = simplexml_import_dom($dom);

    echo $s->book[0]->title;
    ?>

以上示例会输出：

    blah

示例 #2 Importing a Dom\Document

    <?php
    $dom = Dom\XMLDocument::createFromString('<books><book><title>blah</title></book></books>');

    $s = simplexml_import_dom($dom);

    echo $s->book[0]->title;
    ?>

以上示例会输出：

    blah

### 参见

- dom_import_simplexml() - Gets a DOMAttr or DOMElement object from a SimpleXMLElement object
- Basic SimpleXML usage

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