justinpatrin at php dot net:
> To get a proper DOM document (which you need to do most things) you need...
No you don't. Just do:
<?php
$dom = dom_import_simplexml($xml)->ownerDocument;
?>
(PHP 5, PHP 7, PHP 8)
dom_import_simplexml — Bir SimpleXMLElement düğümü alıp bir DOMElement düğümü döndürür
Belirtilen özniteliği veya düğüm
(SimpleXMLElement nesnesi olarak) düğümünü alıp
sırayla bir DOMAttr veya
bir DOMElement düğümü döndürür. Bu yeni nesne
SimpleXMLElement ile aynı temel XML düğümüne
başvurur.
düğümİthal edilecek öznitelik veya eleman düğümü (SimpleXMLElement nesnesi olarak).
DOMAttr veya DOMElement düğümü ekler.
| Sürüm: | Açıklama |
|---|---|
| 8.0.0 |
Bu işlev başarısızlık durumunda artık null döndürmüyor.
|
Örnek 1 - dom_import_simplexml() ile DOM'a SimpleXML ithali
<?php
$sxe = simplexml_load_string('<books><book><title>blah</title></book></books>');
if ($sxe === false) {
echo 'Belge çözümlenirken hata oluştu ';
exit;
}
$dom_sxe = dom_import_simplexml($sxe);
if (!$dom_sxe) {
echo 'XML dönüşümünde hata oluştu ';
exit;
}
$dom = new DOMDocument('1.0');
$dom_sxe = $dom->importNode($dom_sxe, true);
$dom_sxe = $dom->appendChild($dom_sxe);
echo $dom->saveXML();
?>Yukarıdaki örneğin çıktısı:
<?xml version="1.0"?> <books><book><title>blah</title></book></books>
Örnek 2 - SimpleXML'in DOM'a aktarılması ve SimpleXML'in DOM aracılığıyla değiştirilmesi
Kısa olması için hata işleme kısmı atlanmıştır.
<?php
$sxe = simplexml_load_string('<books><book><title>blah</title></book></books>');
$elt = dom_import_simplexml($sxe);
$elt->setAttribute("foo", "bar");
echo $sxe->asXML();
?>Yukarıdaki örneğin çıktısı:
<?xml version="1.0"?> <books foo="bar"><book><title>blah</title></book></books>
justinpatrin at php dot net:
> To get a proper DOM document (which you need to do most things) you need...
No you don't. Just do:
<?php
$dom = dom_import_simplexml($xml)->ownerDocument;
?>//No need to initiate, import and append on example#1
(...)
$dom_sxe = dom_import_simplexml($sxe);
if (!$dom_sxe) {
echo 'Erreur lors de la conversion du XML';
exit;
}
//$dom = new DOMDocument('1.0');
//$dom_sxe = $dom->importNode($dom_sxe, true);
//$dom_sxe = $dom->appendChild($dom_sxe);
//use ownerDocument propertie
echo $dom->ownerDocument->saveXML();
?>SimpleXML is an 'Object Mapping XML API'. It is not DOM, per se. SimpleXML converts the XML elements into PHP's native data types.
The dom_import_simplexml and simplexml_import_dom functions do *not* create separate copies of the original object. You are free to use the methods of either or both interchangeably, since the underlying instance is the same.
<?php
// initialize a simplexml object
$sxe = simplexml_load_string('<root/>');
// get a dom interface on the simplexml object
$dom = dom_import_simplexml($sxe);
// dom adds a new element under the root
$element = $dom->appendChild(new DOMElement('dom_element'));
// dom adds an attribute on the new element
$element->setAttribute('creator', 'dom');
// simplexml adds an attribute on the dom element
$sxe->dom_element['sxe_attribute'] = 'added by simplexml';
// simplexml adds a new element under the root
$element = $sxe->addChild('sxe_element');
// simplexml adds an attribute on the new element
$element['creator'] = 'simplexml';
// dom finds the simplexml element (via DOMNodeList->index)
$element = $dom->getElementsByTagName('sxe_element')->item(0);
// dom adds an attribute on the simplexml element
$element->setAttribute('dom_attribute', 'added by dom');
echo ('<pre>');
print_r($sxe);
echo ('</pre>');
?>
Outputs:
SimpleXMLElement Object
(
[dom_element] => SimpleXMLElement Object
(
[@attributes] => Array
(
[creator] => dom
[sxe_attribute] => added by simplexml
)
)
[sxe_element] => SimpleXMLElement Object
(
[@attributes] => Array
(
[creator] => simplexml
[dom_attribute] => added by dom
)
)
)
What this illustrates is that both interfaces are operating on the same underlying object instance. Also, when you dom_import_simplexml, you can create and add new elements without reference to an ownerDocument (or documentElement).
So passing a SimpleXMLElement to another method does not mean the recipient is limited to using SimpleXML methods.
Hey Presto! Your telescope has become a pair of binoculars!I've found that newer versions of PHP5 require some special syntax in order to properly convert between SimpleXML and DOM. It's not as easy as calling dom_import_simplexml() with a SimpleXML node. To get a proper DOM document (which you need to do most things) you need:
<?php
//$xml is a SimpleXML instance
$domnode = dom_import_simplexml($xml);
$dom = new DOMDocument();
$domnode = $dom->importNode($domnode, true);
$dom->appendChild($domnode);
?>
Switching back, though, is, well...simple.
<?php
//$dom is a DOMDocument instance
$xml = simplexml_import_dom($dom);
?>Very useful to add a CDATA node with SimpleXMLElement (use it like addChild) :
<?php
class My_SimpleXMLElement extends SimpleXMLElement {
public function addChildWithCData($name, $value = NULL) {
$new_child = $this->addChild($name);
$node = dom_import_simplexml($new_child);
$no = $node->ownerDocument;
$node->appendChild($no->createCDATASection($value));
return $new_child;
}
}