public DOMNode::C14N(
    bool $exclusive = false,
    bool $withComments = false,
    ?array $xpath = null,
    ?array $nsPrefixes = null
): string|false

public DOMNode::C14NFile(
    string $uri,
    bool $exclusive = false,
    bool $withComments = false,
    ?array $xpath = null,
    ?array $nsPrefixes = null
): int|false

public DOMNode::cloneNode(bool $deep = false): DOMNode|false

public DOMNode::contains(DOMNode|DOMNameSpaceNode|null $other): bool

public DOMNode::getLineNo(): int

public DOMNode::getNodePath(): ?string

public DOMNode::getRootNode(?array $options = null): DOMNode

public DOMNode::hasAttributes(): bool

public DOMNode::hasChildNodes(): bool

public DOMNode::insertBefore(DOMNode $node, ?DOMNode $child = null): DOMNode|false

public DOMNode::isDefaultNamespace(string $namespace): bool

public DOMNode::isEqualNode(?DOMNode $otherNode): bool

public DOMNode::isSameNode(DOMNode $otherNode): bool

public DOMNode::isSupported(string $feature, string $version): bool

public DOMNode::lookupNamespaceURI(?string $prefix): ?string

public DOMNode::lookupPrefix(string $namespace): ?string

public DOMNode::normalize(): void

public DOMNode::removeChild(DOMNode $child): DOMNode|false

public DOMNode::replaceChild(DOMNode $node, DOMNode $child): DOMNode|false

}

属性

childElementCount: The number of child elements.
firstElementChild: First child element or null.
lastElementChild: Last child element or null.
nextElementSibling: The next sibling element or null.
previousElementSibling: The previous sibling element or null.
schemaTypeInfo: Not implemented yet, always return null
tagName: The element name
className: A string representing the classes of the element separated by spaces
id: The element ID

更新日志

版本	说明
8.0.0	The `firstElementChild`, `lastElementChild`, `childElementCount`, `previousElementSibling`, and `nextElementSibling` properties have been added.
8.0.0	DOMElement implements DOMParentNode and DOMChildNode now.

注释

注意:
此 DOM 扩展采用 UTF-8 编码。使用 mb_convert_encoding()、UConverter::transcode() 或 iconv() 来处理其它编码。

DOMElement::after — Adds nodes after the element
DOMElement::append — Appends nodes after the last child node
DOMElement::before — Adds nodes before the element
DOMElement::__construct — Creates a new DOMElement object
DOMElement::getAttribute — Returns value of attribute
DOMElement::getAttributeNames — Get attribute names
DOMElement::getAttributeNode — Returns attribute node
DOMElement::getAttributeNodeNS — Returns attribute node
DOMElement::getAttributeNS — Returns value of attribute
DOMElement::getElementsByTagName — Gets elements by tagname
DOMElement::getElementsByTagNameNS — Get elements by namespaceURI and localName
DOMElement::hasAttribute — Checks to see if attribute exists
DOMElement::hasAttributeNS — Checks to see if attribute exists
DOMElement::insertAdjacentElement — Insert adjacent element
DOMElement::insertAdjacentText — Insert adjacent text
DOMElement::prepend — Prepends nodes before the first child node
DOMElement::remove — Removes the element
DOMElement::removeAttribute — Removes attribute
DOMElement::removeAttributeNode — Removes attribute
DOMElement::removeAttributeNS — Removes attribute
DOMElement::replaceChildren — Replace children in element
DOMElement::replaceWith — Replaces the element with new nodes
DOMElement::setAttribute — Adds new or modifies existing attribute
DOMElement::setAttributeNode — Adds new attribute node to element
DOMElement::setAttributeNodeNS — Adds new attribute node to element
DOMElement::setAttributeNS — Adds new attribute
DOMElement::setIdAttribute — Declares the attribute specified by name to be of type ID
DOMElement::setIdAttributeNode — Declares the attribute specified by node to be of type ID
DOMElement::setIdAttributeNS — Declares the attribute specified by local name and namespace URI to be of type ID
DOMElement::toggleAttribute — Toggle attribute

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用户贡献的备注 13 notes

down

118

j DOT wagner ( AT ) medieninnovation.com ¶

16 years ago

Caveat!
It took me almost an hour to figure this out, so I hope it saves at least one of you some time.

If you want to debug your DOM tree and try var_dump() or similar you will be fooled into thinking the DOMElement that you are looking at is empty, because var_dump() says: object(DOMElement)#1 (0) { } 

After much debugging I found out that all DOM objects are invisible to var_dump() and print_r(), my guess is because they are C objects and not PHP objects. So I tried saveXML(), which works fine on DOMDocument, but is not implemented on DOMElement.

The solution is simple (if you know it):
$xml = $domElement->ownerDocument->saveXML($domElement);

This will give you an XML representation of $domElement.

down

Pinochet ¶

16 years ago

Hi to get the value of DOMElement just get the nodeValue public parameter (it is inherited from DOMNode):
<?php 
echo $domElement->nodeValue; 
?>
Everything is obvious if you now about this thing ;-)

down

Janne Enberg ¶

11 years ago

This page doesn't list the inherited properties from DOMNode, e.g. the quite important textContent property. It would be immensely helpful if it would list those as well.

down

dpetroff ( at ) gmail.com ¶

13 years ago

Hi!



Combining all th comments, the easiest way to get inner HTML of the node is to use this function:



<?php

function get_inner_html( $node ) {

    $innerHTML= '';

    $children = $node->childNodes;

    foreach ($children as $child) {

        $innerHTML .= $child->ownerDocument->saveXML( $child );

    }



    return $innerHTML;

}

?>

down

Daniel Morlock ¶

15 years ago

It would be nice to have a function which converts a document/node/element into a string. 

Anyways, I use the following code snippet to get the innerHTML value of a DOMNode:

<?php
function getInnerHTML($Node)
{
     $Body = $Node->ownerDocument->documentElement->firstChild->firstChild;
     $Document = new DOMDocument();     
     $Document->appendChild($Document->importNode($Body,true));
     return $Document->saveHTML();
}
?>

down

felix dot klee at inka dot de ¶

11 years ago

How to rename an element and preserve attributes:

<?php

// Changes the name of element $element to $newName.
function renameElement($element, $newName) {
  $newElement = $element->ownerDocument->createElement($newName);
  $parentElement = $element->parentNode;
  $parentElement->insertBefore($newElement, $element);

  $childNodes = $element->childNodes;
  while ($childNodes->length > 0) {
    $newElement->appendChild($childNodes->item(0));
  }

  $attributes = $element->attributes;
  while ($attributes->length > 0) {
    $attribute = $attributes->item(0);
    if (!is_null($attribute->namespaceURI)) {
      $newElement->setAttributeNS('http://www.w3.org/2000/xmlns/',
                                  'xmlns:'.$attribute->prefix,
                                  $attribute->namespaceURI);
    }
    $newElement->setAttributeNode($attribute);
  }

  $parentElement->removeChild($element);
}
 
function prettyPrint($d) {
  $d->formatOutput = true;
  echo '<pre>'.htmlspecialchars($d->saveXML()).'</pre>';
}

$d = new DOMDocument( '1.0' );
$d->loadXML('<?xml version="1.0"?>
<library>
  <data a:foo="1" x="bar" xmlns:a="http://example.com/a">
    <invite>
      <username>jmansa</username>
      <userid>1</userid>
    </invite>
    <update>1</update>
  </data>
</library>');

$xpath = new DOMXPath($d);
$elements = $xpath->query('/library/data');
if ($elements->length == 1) {
  $element = $elements->item(0);
  renameElement($element, 'invites');
}

prettyPrint($d);

?>

down

patrick smith ¶

16 years ago

Although it may be preferable to use the dom to manipulate elements, sometimes it's useful to actually get the innerHTML from a document element (e.g. to load into a client-side editor).



To get the innerHTML of a specific element ($elem_id) in a specific html file ($filepath):



<?php

$innerHTML = '';

$doc = new DOMDocument();

$doc->loadHTMLFile($filepath);    

$elem = $doc->getElementById($elem_id);



// loop through all childNodes, getting html        

$children = $elem->childNodes;

foreach ($children as $child) {

    $tmp_doc = new DOMDocument();

    $tmp_doc->appendChild($tmp_doc->importNode($child,true));        

    $innerHTML .= $tmp_doc->saveHTML();

}

?>

down

ae.fxx ¶

16 years ago

Hi there.

Remember to append a DOMNode (or any of its descendants) to a DOMDocument __BEFORE__ you try to append a child to it.

I don't know why it has to be this way but it can't be done without it.

bye

down

johnny ¶

10 years ago

Get html of a node
 $html .= $dom->saveHTML($node);

down

Anonymous ¶

13 years ago

you can use DOMNode::nodeValue
DOMElement inherits this public property.

$elem->nodeValue

down

loopduplicate at burningtoken dot com ¶

13 years ago

This works perfect for me as well:



<?php $xml = $domElement->ownerDocument->saveXML($domElement); ?>

down

nawaman at gmail dot com ¶

15 years ago

The following code shows can text-only content be extracted from a document.



<?php

function getTextFromNode($Node, $Text = "") {

    if ($Node->tagName == null)

        return $Text.$Node->textContent;



    $Node = $Node->firstChild;

    if ($Node != null)

        $Text = getTextFromNode($Node, $Text);



    while($Node->nextSibling != null) {

        $Text = getTextFromNode($Node->nextSibling, $Text);

        $Node = $Node->nextSibling;

    }

    return $Text;

}



function getTextFromDocument($DOMDoc) {

    return getTextFromNode($DOMDoc->documentElement);

}



$Doc = new DOMDocument();

$Doc->loadHTMLFile("Test.html");

echo getTextFromDocument($Doc)."\n";

?>

down

-3

Severin ¶

16 years ago

I wanted to find similar Elements - thats why I built an Xpath-String like this - maybe somebody needs it... its not very pretty - but neither is domdocument :)



<?php



$dom->load($xmlFile))



$xpathQuery = '//*';

$xmlNodes = $xpath->query($xpathQuery);

        

$pathlist = array();

$attrlist = array();

foreach ($xmlNodes as $node) {



  $depth = $this->_getDomDepth($node);   //get Path-Depth (for array key)

  $pathlist[$depth] = $node->tagName;     // tagname

          

  $attrs = $node->attributes;

  $attr='';

  $a=0;

  foreach ($attrs as $attrName => $attrNode)  // attributes

            {

              if ($attrName !='reg')

              {

                if ($a++!=0) $attr .= ' and ';

                $attr .= '@'.$attrName.'='."'".$attrNode->value."'";

              }

            }

          

          $attrlist[$depth] = $attr?'['.$attr.']':'';

          

          $path = ''; for ($i=0;$i<=$depth;$i++) $path .= '/'.$pathlist[$i].$attrlist[$i];  // the xpath of the actual Element



    // ... now you can go on and user $path to find similar elements

    }

  }

}



 private function _getDomDepth(DomNode $node)

   {

     $r = -2;

     while ($node) {

       $r++;  

       $node = $node->parentNode;

     } 

     return  $r;

   }

?>

The DOMElement class

类摘要

属性

更新日志

注释

目录

改进此页面

用户贡献的备注 13 notes