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    The DOMElement class

    (PHP 5, PHP 7)

    클래스 개요

    DOMElement extends DOMNode {
    /* 프로퍼티 */
    readonly public bool $schemaTypeInfo ;
    readonly public string $tagName ;
    /* 메소드 */
    public __construct ( string $name [, string $value [, string $namespaceURI ]] )
    public string getAttribute ( string $name )
    public DOMAttr getAttributeNode ( string $name )
    public DOMAttr getAttributeNodeNS ( string $namespaceURI , string $localName )
    public string getAttributeNS ( string $namespaceURI , string $localName )
    public DOMNodeList getElementsByTagName ( string $name )
    public DOMNodeList getElementsByTagNameNS ( string $namespaceURI , string $localName )
    public bool hasAttribute ( string $name )
    public bool hasAttributeNS ( string $namespaceURI , string $localName )
    public bool removeAttribute ( string $name )
    public bool removeAttributeNode ( DOMAttr $oldnode )
    public bool removeAttributeNS ( string $namespaceURI , string $localName )
    public DOMAttr setAttribute ( string $name , string $value )
    public DOMAttr setAttributeNode ( DOMAttr $attr )
    public DOMAttr setAttributeNodeNS ( DOMAttr $attr )
    public void setAttributeNS ( string $namespaceURI , string $qualifiedName , string $value )
    public void setIdAttribute ( string $name , bool $isId )
    public void setIdAttributeNode ( DOMAttr $attr , bool $isId )
    public void setIdAttributeNS ( string $namespaceURI , string $localName , bool $isId )
    /* 상속된 메소드 */
    public DOMNode DOMNode::appendChild ( DOMNode $newnode )
    public string DOMNode::C14N ([ bool $exclusive [, bool $with_comments [, array $xpath [, array $ns_prefixes ]]]] )
    public int DOMNode::C14NFile ( string $uri [, bool $exclusive [, bool $with_comments [, array $xpath [, array $ns_prefixes ]]]] )
    public DOMNode DOMNode::cloneNode ([ bool $deep ] )
    public int DOMNode::getLineNo ( void )
    public string DOMNode::getNodePath ( void )
    public bool DOMNode::hasAttributes ( void )
    public bool DOMNode::hasChildNodes ( void )
    public DOMNode DOMNode::insertBefore ( DOMNode $newnode [, DOMNode $refnode ] )
    public bool DOMNode::isDefaultNamespace ( string $namespaceURI )
    public bool DOMNode::isSameNode ( DOMNode $node )
    public bool DOMNode::isSupported ( string $feature , string $version )
    public string DOMNode::lookupNamespaceURI ( string $prefix )
    public string DOMNode::lookupPrefix ( string $namespaceURI )
    public void DOMNode::normalize ( void )
    public DOMNode DOMNode::removeChild ( DOMNode $oldnode )
    public DOMNode DOMNode::replaceChild ( DOMNode $newnode , DOMNode $oldnode )
    }

    프로퍼티

    schemaTypeInfo

    Not implemented yet, always return NULL

    tagName

    The element name

    주의

    Note:

    The DOM extension uses UTF-8 encoding. Use utf8_encode() and utf8_decode() to work with texts in ISO-8859-1 encoding or Iconv for other encodings.

    Table of Contents

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    User Contributed Notes 13 notes

    up
    120
    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.
    up
    63
    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 ;-)
    up
    38
    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.
    up
    28
    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;
    }
    ?>
    up
    10
    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();
    }
    ?>
    up
    4
    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);

    ?>
    up
    4
    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();
    }
    ?>
    up
    3
    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
    up
    2
    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";
    ?>
    up
    1
    johnny
    10 years ago
    Get html of a node
    $html .= $dom->saveHTML($node);
    up
    1
    Anonymous
    13 years ago
    you can use DOMNode::nodeValue
    DOMElement inherits this public property.

    $elem->nodeValue
    up
    1
    loopduplicate at burningtoken dot com
    13 years ago
    This works perfect for me as well:

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