SimpleXML 函数
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PHP手册

simplexml_import_dom

(PHP 5)

simplexml_import_dom — Get a SimpleXMLElement object from a DOM node.

说明

SimpleXMLElement simplexml_import_dom ( DOMNode $node [, string $class_name = "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 或者在失败时返回 FALSE.

范例

Example #1 Importing DOM

<?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;
?>

以上例程会输出：

blah

参见

SimpleXML 函数
在线手册：中文 英文
PHP手册
PHP手册 - N: Get a SimpleXMLElement object from a DOM node.

用户评论:

peter-SPAMrubbish-ATveridon.com (06-Mar-2008 07:06)

Something that surprised me, any changes made to the SimpleXML object obtained from the imported DOMDocument also change the original DOMDocument.

e.g.

<?php

$string = '<root><foo>abc</foo></root>';
$domxml = DOMDocument::loadXML($string);
$simplexml = simplexml_import_dom($domxml);
$simplexml->foo = "xyz";
$simplexml->bar = "123";
echo $domxml->saveXML();

?>
Outputs:

--START--
<?xml version="1.0"?>
<root><foo>xyz</foo><bar>123</bar></root>

spam AT media MINUS soma DOT de (26-Jul-2006 05:27)

Please note that a valid SimpleXMLElement is typecasted to false.

<?php

    $string = '<root><foo>abc</foo></root>';
    $xml = DOMDocument::loadXML($string);
    $xml = simplexml_import_dom($xml);
    echo 'simplexml_import_dom';
    var_dump($xml);
    var_dump((bool)$xml);

    $xml = simplexml_load_string('<root><foo>abc</foo></root>');
    echo 'simplexml_load_string';
    var_dump($xml);
    var_dump((bool)$xml);

    $xml = simplexml_load_file('test.xml');
    echo 'simplexml_load_file';
    var_dump($xml);
    var_dump((bool)$xml);

?>

Outputs:

--START--
simplexml_import_dom

object(SimpleXMLElement)[2]
  public 'foo' => 'abc'

false

simplexml_load_string

object(SimpleXMLElement)[1]
  public 'foo' => 'abc'

false

simplexml_load_file

object(SimpleXMLElement)[2]
  public 'foo' => 'abc'

false
--END--