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::compareDocumentPosition(DOMNode $other): int

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

}

Propriedades

actualEncoding: Descontinuado.Codificação real do documento, é uma leitura apenas equivalente a encoding.
childElementCount: O número de elementos filhos.
config: Descontinuado. Configuração usando quando DOMDocument::normalizeDocument() é invocada.
doctype: A Declaração de Tipo de Documento associada a este documento.
documentElement: O objeto DOMElement que é o primeiro elemento do documento. Se não encontrado, é avaliado como null.
documentURI: A localização do documento ou null se indefinido.
encoding: Codificação do documento, conforme especificado pela declaração XML. Este atributo não está presente na especificação final do DOM Nível 3, mas é a única maneira de manipular a codificação do documento XML nesta implementação.
firstElementChild: Primeiro elemento filho ou null.
formatOutput: Formata a saída com espaçamento e recuo adicionais. Isso não tem efeito se o documento foi carregado com preserveWhitespace habilitado.
implementation: O objeto DOMImplementation que manipula este documento.
lastElementChild: Último elemento filho ou null.
preserveWhiteSpace: Não remover espaços em branco redundantes. O padrão é true. Definir isso como false tem o mesmo efeito que passar LIBXML_NOBLANKS como option para DOMDocument::load() etc.
recover: Proprietário. Ativa o modo de recuperação, ou seja, tenta analisar documentos mal formados. Este atributo não faz parte da especificação DOM e é específico para o libxml.
resolveExternals: Configure como true para carregar entidades externas de uma declaração de tipo de documento (doctype). Isso é útil para incluir entidades de caracteres em seu documento XML.
standalone: Descontinuado. Se o documento é ou não independente, conforme especificado pela declaração XML, corresponde a xmlStandalone.
strictErrorChecking: Lança DOMException em caso de erro. Padrão é true.
substituteEntities: Proprietário. Se deve ou não substituir entidades. Este atributo não faz parte da especificação DOM e é específico para o libxml. Padrão é false.

Cuidado
A ativação da substituição de entidades pode facilitar ataques de XML External Entity (XXE).
validateOnParse: Carrega e valida em relação ao DTD. Padrão é false.

Cuidado
Ativar a validação do DTD pode facilitar ataques de XML External Entity (XXE).
version: Descontinuado. Versão do XML, corresponde a xmlVersion.
xmlEncoding: Um atributo especificando, como parte da declaração XML, a codificação deste documento. Isso é null quando não especificado ou quando não é conhecido, como quando o Documento foi criado na memória.
xmlStandalone: Um atributo que especifica, como parte da declaração XML, se este documento é independente. Isso é false quando não especificado. Um documento independente é aquele que não possui declarações de marcações externas. Um exemplo de tal declaração de marcação é quando o DTD declara um atributo com um valor padrão.
xmlVersion: Um atributo que especifica, como parte da declaração XML, o número da versão deste documento. Se não houver declaração e se este documento suportar o recurso "XML", o valor é "1.0".

Registro de Alterações

Versão	Descrição
8.0.0	DOMDocument implements DOMParentNode now.
8.0.0	O método não implementado DOMDocument::renameNode() foi removido.

Notas

Nota:
A extensão DOM usa codificação UTF-8. Use mb_convert_encoding(), UConverter::transcode() ou iconv() para lidar com outras codificações.

Nota:
Ao usar json_encode() em um objeto DOMDocument, o resultado será a codificação de um objeto vazio.

Veja Também

» Especificação do W3C para Documento.

Índice

DOMDocument::adoptNode — Transfere um nó de outro documento
DOMDocument::append — Adiciona nós após o último nó filho
DOMDocument::__construct — Cria um novo objeto DOMDocument
DOMDocument::createAttribute — Cria um novo attribute
DOMDocument::createAttributeNS — Cria um novo nó de atributo com um namespace associado
DOMDocument::createCDATASection — Cria um novo nó de CDATA
DOMDocument::createComment — Cria novo nó de comentárioe
DOMDocument::createDocumentFragment — Cria novo fragmento de documento
DOMDocument::createElement — Cria novo nó de elemento
DOMDocument::createElementNS — Cria novo nó de elemento com um namespace associado
DOMDocument::createEntityReference — Cria novo nó de referência de entidade
DOMDocument::createProcessingInstruction — Cria novo nó PI (Processing Instruction)
DOMDocument::createTextNode — Cria novo nó de texto
DOMDocument::getElementById — Procura por um elemento com um determinado ID
DOMDocument::getElementsByTagName — Procura por todos os elementos com uma determinada tag name local
DOMDocument::getElementsByTagNameNS — Procura por todos os elementos com uma determinada tag name em um namespace específico
DOMDocument::importNode — Importa um nó para o documento atual
DOMDocument::load — Carrega XML de um arquivo
DOMDocument::loadHTML — Carrega HTML a partir de uma string
DOMDocument::loadHTMLFile — Carrega HTML de um arquivo
DOMDocument::loadXML — Carrega XML a partir de uma string
DOMDocument::normalizeDocument — Normaliza o documento
DOMDocument::prepend — Adiciona nós antes do primeiro nó filho
DOMDocument::registerNodeClass — Registra uma classe estendida usada para criar um tipo de nó base
DOMDocument::relaxNGValidate — Realiza a validação relaxNG no documento
DOMDocument::relaxNGValidateSource — Realiza a validação relaxNG no documento
DOMDocument::replaceChildren — Substitui filhos no documento
DOMDocument::save — Grava a árvore XML interna de volta em um arquivo
DOMDocument::saveHTML — Despeja o documento interno em uma string usando formatação HTML
DOMDocument::saveHTMLFile — Despeja o documento interno em um arquivo usando formatação HTML
DOMDocument::saveXML — Despeja a árvore XML interna de volta em uma string
DOMDocument::schemaValidate — Valida um documento com base em um esquema. Apenas XML Schema 1.0 é suportado.
DOMDocument::schemaValidateSource — Valida um documento com base em um esquema
DOMDocument::validate — Valida o documento com base em seu DTD
DOMDocument::xinclude — Substitui XIncludes em um objeto DOMDocument

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Notas Enviadas por Usuários (em inglês) 19 notes

down

113

Fernando H ¶

16 years ago

Showing a quick example of how to use this class, just so that new users can get a quick start without having to figure it all out by themself. ( At the day of posting, this documentation just got added and is lacking examples. )

<?php

// Set the content type to be XML, so that the browser will   recognise it as XML.
header( "content-type: application/xml; charset=ISO-8859-15" );

// "Create" the document.
$xml = new DOMDocument( "1.0", "ISO-8859-15" );

// Create some elements.
$xml_album = $xml->createElement( "Album" );
$xml_track = $xml->createElement( "Track", "The ninth symphony" );

// Set the attributes.
$xml_track->setAttribute( "length", "0:01:15" );
$xml_track->setAttribute( "bitrate", "64kb/s" );
$xml_track->setAttribute( "channels", "2" );

// Create another element, just to show you can add any (realistic to computer) number of sublevels.
$xml_note = $xml->createElement( "Note", "The last symphony composed by Ludwig van Beethoven." );

// Append the whole bunch.
$xml_track->appendChild( $xml_note );
$xml_album->appendChild( $xml_track );

// Repeat the above with some different values..
$xml_track = $xml->createElement( "Track", "Highway Blues" );

$xml_track->setAttribute( "length", "0:01:33" );
$xml_track->setAttribute( "bitrate", "64kb/s" );
$xml_track->setAttribute( "channels", "2" );
$xml_album->appendChild( $xml_track );

$xml->appendChild( $xml_album );

// Parse the XML.
print $xml->saveXML();

?>

Output:
<Album>
  <Track length="0:01:15" bitrate="64kb/s" channels="2">
    The ninth symphony
    <Note>
      The last symphony composed by Ludwig van Beethoven.
    </Note>
  </Track>
  <Track length="0:01:33" bitrate="64kb/s" channels="2">Highway Blues</Track>
</Album>

If you want your PHP->DOM code to run under the .xml extension, you should set your webserver up to run the .xml extension with PHP ( Refer to the installation/configuration configuration for PHP on how to do this ).

Note that this:
<?php
$xml = new DOMDocument( "1.0", "ISO-8859-15" );
$xml_album = $xml->createElement( "Album" );
$xml_track = $xml->createElement( "Track" );
$xml_album->appendChild( $xml_track );
$xml->appendChild( $xml_album );
?>

is NOT the same as this:
<?php
// Will NOT work.
$xml = new DOMDocument( "1.0", "ISO-8859-15" );
$xml_album = new DOMElement( "Album" );
$xml_track = new DOMElement( "Track" );
$xml_album->appendChild( $xml_track );
$xml->appendChild( $xml_album );
?>

although this will work:
<?php
$xml = new DOMDocument( "1.0", "ISO-8859-15" );
$xml_album = new DOMElement( "Album" );
$xml->appendChild( $xml_album );
?>

down

developer at nabtron dot com ¶

8 years ago

For those landing here and checking for encoding issue with utf-8 characteres, it's pretty easy to correct it, without adding any additional output tag to your html.

We'll be utilizing: mb_convert_encoding

Thanks to the user who shared: SmartDOMDocument in previous comments, I got the idea of solving it. However I truly wish that he shared the method instead of giving a link.

Anyway coming back to the solution, you can simply use:

<?php

            // checks if the content we're receiving isn't empty, to avoid the warning
            if ( empty( $content ) ) {
                return false;
            }

            // converts all special characters to utf-8
            $content = mb_convert_encoding($content, 'HTML-ENTITIES', 'UTF-8');

            // creating new document
            $doc = new DOMDocument('1.0', 'utf-8');

            //turning off some errors
            libxml_use_internal_errors(true);

            // it loads the content without adding enclosing html/body tags and also the doctype declaration
            $doc->LoadHTML($content, LIBXML_HTML_NOIMPLIED | LIBXML_HTML_NODEFDTD);

            // do whatever you want to do with this code now

?>

I hope it solves the issue for someone! If you need my help or service to fix your code, you can reach me on nabtron.com or contact me at the email mentioned with this comment.

down

jay at jaygilford dot com ¶

14 years ago

Here's a small function I wrote to get all page links using the DOMDocument which will hopefully be of use to others



<?php

/**

 * @author Jay Gilford

 */

 

/**

 * get_links()

 * 

 * @param string $url

 * @return array

 */

function get_links($url) {

 

    // Create a new DOM Document to hold our webpage structure

    $xml = new DOMDocument();

 

    // Load the url's contents into the DOM

    $xml->loadHTMLFile($url);

 

    // Empty array to hold all links to return

    $links = array();

 

    //Loop through each <a> tag in the dom and add it to the link array

    foreach($xml->getElementsByTagName('a') as $link) {

        $links[] = array('url' => $link->getAttribute('href'), 'text' => $link->nodeValue);

    }

 

    //Return the links

    return $links;

}

?>

down

andreas at userbrain dot com ¶

3 years ago

After struggling with parsing and modifying partial HTML content for several hours, I came to this solution which does work for me and is relatively simple compared to what else I found online.

This solution fixes unwanted DOCTYPE and html, body tags as well as encoding issues.

<?php

// Assumption: content is utf-8 encoded
$content = "<h1>This is a heading</h1><p>This is a paragraph</p>";

// Load content to a div and specify encoding with a meta tag
$temp_dom = new DOMDocument();
$temp_dom->loadHTML("<meta http-equiv='Content-Type' content='charset=utf-8' /><div>$content</div>");

// As loadHTML() adds a DOCTYPE as well as <html> and <body> tag, let’s create another DOMDocument and import just the nodes we want
$dom = new DOMDocument();
$first_div = $temp_dom->getElementsByTagName('div')[0];
$first_div_node = $dom->importNode($first_div, true);
$dom->appendChild($first_div_node);

// Do whatever you want to do
$dom->getElementsByTagName('h1')[0]->setAttribute('class', 'happy');

// You could also just echo $dom->saveHtml() if you don’t mind the div and whitespace 
echo substr(trim($dom->saveHtml()), 5, -6);

// Outputs: <h1 class="happy">This is a heading</h1><p>This is a paragraph</p>
?>

down

tloach at gmail dot com ¶

14 years ago

For anyone else who has been having issues with formatOuput not working, here is a work-around:



rather than just doing something like:



<?php

$outXML = $xml->saveXML();

?>



force it to reload the XML from scratch, then it will format correctly:



<?php

$outXML = $xml->saveXML();

$xml = new DOMDocument();

$xml->preserveWhiteSpace = false;

$xml->formatOutput = true;

$xml->loadXML($outXML);

$outXML = $xml->saveXML();

?>

down

biker dot mike at gmx dot com ¶

8 years ago

Look out for the following gotcha when loading XML from a string:

<?php
$doc = new \DOMDocument;
$doc->documentURI = $myXmlFilename;
$doc->loadXML($myXmlString);
?>

documentURI is now set to the value of $myXmlFilename, right?

Wrong!

It's set to the current working directory.  If you want to manually set documentURI to something other than the CWD, do so AFTER the call to loadXML().

E.g.:
<?php
$doc = new \DOMDocument;
$doc->loadXML($myXmlString);
$doc->documentURI = $myXmlFilename;
?>

documentURI really is now set to the value of $myXmlFilename.

down

Nick M ¶

13 years ago

You may need to save all or part of a DOMDocument as an XHTML-friendly string, something compliant with both XML and HTML 4. Here's the DOMDocument class extended with a saveXHTML method:

<?php

/**
 * XHTML Document
 *
 * Represents an entire XHTML DOM document; serves as the root of the document tree.
 */
class XHTMLDocument extends DOMDocument {

  /**
   * These tags must always self-terminate. Anything else must never self-terminate.
   * 
   * @var array
   */
  public $selfTerminate = array(
      'area','base','basefont','br','col','frame','hr','img','input','link','meta','param'
  );
  
  /**
   * saveXHTML
   *
   * Dumps the internal XML tree back into an XHTML-friendly string.
   *
   * @param DOMNode $node
   *         Use this parameter to output only a specific node rather than the entire document.
   */
  public function saveXHTML(DOMNode $node=null) {
    
    if (!$node) $node = $this->firstChild;
    
    $doc = new DOMDocument('1.0');
    $clone = $doc->importNode($node->cloneNode(false), true);
    $term = in_array(strtolower($clone->nodeName), $this->selfTerminate);
    $inner='';
    
    if (!$term) {
      $clone->appendChild(new DOMText(''));
      if ($node->childNodes) foreach ($node->childNodes as $child) {
        $inner .= $this->saveXHTML($child);
      }
    }
    
    $doc->appendChild($clone);
    $out = $doc->saveXML($clone);
    
    return $term ? substr($out, 0, -2) . ' />' : str_replace('><', ">$inner<", $out);

  }

}

?>

This hasn't been benchmarked, but is probably significantly slower than saveXML or saveHTML and should be used sparingly.

down

pastormontesinos at gmail dot com ¶

3 years ago

For using safely with script nodes when parsing, best option is extending DOMDocument, keeping script tags while DOMDocument process and rearrange them just after saveHTML function is called. Here is my custom class.

<?php 

class SafeDOMDocument extends \DOMDocument
{
    const REGEX_JS            = '#(\s*<!--(\[if[^\n]*>)?\s*(<script.*</script>)+\s*(<!\[endif\])?-->)|(\s*<script.*</script>)#isU';
    const SUBSTITUTION_FORMAT = '<!--<script class="script_%s"></script>-->';
    private $matchedScripts = [];

    public function loadHTML($source, $options = 0)
    {
        $this->formatOutput        = false;
        $this->preserveWhiteSpace  = true;
        $this->validateOnParse     = false;
        $this->strictErrorChecking = false;
        $this->recover             = false;
        $this->resolveExternals    = false;
        $this->substituteEntities  = false;
        $matches = [];
        $success = preg_match_all(self::REGEX_JS, $source, $matches);

        if ($success && !empty($matches)) {
            foreach ($matches[0] as $match) {
                $storedScript = rtrim(ltrim($match, "\n\r\t "), "\n\r\t ");
                $scriptId = md5($storedScript);
                $key = sprintf(self::SUBSTITUTION_FORMAT, $scriptId);
                $source = str_replace($match, $key, $source);
                $this->matchedScripts[$key] = $storedScript;
            }
        }

        return parent::loadHTML($source, $options);
    }

    public function saveHTML(DOMNode $node = null)
    {
        $output = parent::saveHTML($node);

        if (count($this->matchedScripts)) {
            foreach ($this->matchedScripts as $substitution => $originalSnippet) {
                $output = str_replace($substitution, $originalSnippet, $output);
            }
        }

        return $output;
    }
}
?>

down

evert at er dot nl ¶

14 years ago

A nice and simple node 2 array I wrote, worth a try ;) 



<?php

function getArray($node)

{

    $array = false;



    if ($node->hasAttributes())

    {

        foreach ($node->attributes as $attr)

        {

            $array[$attr->nodeName] = $attr->nodeValue;

        }

    }



    if ($node->hasChildNodes())

    {

        if ($node->childNodes->length == 1)

        {

            $array[$node->firstChild->nodeName] = $node->firstChild->nodeValue;

        }

        else

        {

            foreach ($node->childNodes as $childNode)

            {

                if ($childNode->nodeType != XML_TEXT_NODE)

                {

                    $array[$childNode->nodeName][] = $this->getArray($childNode);

                }

            }

        }

    }



    return $array;

}

?>

down

fcartegnie ¶

15 years ago

Be careful with formatOutput().

Creating an empty node like this:
createElement('foo','')
instead of
createElement('foo')
will break formatOutput.

down

devour at php dot net ¶

1 month ago

While DOMDocument can technically be used to parse HTML, it is not ideal for HTML documents and is better suited for processing well-formed XML. One of the primary issues with using DOMDocument for HTML is its strict handling of special characters, such as the ampersand (&).

DOMDocument requires that ampersands be escaped as &amp;, which is in line with XML standards but can be counterintuitive for handling real-world HTML, where raw & characters are commonly found, especially in URLs and text. This behavior stems from the underlying XML-based parser (libxml), which treats HTML with the same strictness as XML.

This problem has been reported as far back as 2001, yet the same parsing errors continue to occur when using DOMDocument on HTML documents today.

A common workaround developers use is to suppress the error reporting from DOMDocument, particularly when parsing errors like unescaped ampersands occur. However, suppressing these errors is not recommended, especially in production environments, as it can hide important issues and pose potential security risks. Ignoring or suppressing errors can leave warnings unnoticed, which may result in vulnerabilities if not properly addressed.

For these reasons, it's advisable to use DOMDocument primarily for XML documents, or to consider more appropriate libraries  when working with HTML to avoid these issues.

theCoder / MV

down

cmyk777 at gmail dot com ¶

15 years ago

This function may help to debug current dom element:

<?php
function dom_dump($obj) {
    if ($classname = get_class($obj)) {
        $retval = "Instance of $classname, node list: \n";
        switch (true) {
            case ($obj instanceof DOMDocument):
                $retval .= "XPath: {$obj->getNodePath()}\n".$obj->saveXML($obj);
                break;
            case ($obj instanceof DOMElement):
                $retval .= "XPath: {$obj->getNodePath()}\n".$obj->ownerDocument->saveXML($obj);
                break;
            case ($obj instanceof DOMAttr):
                $retval .= "XPath: {$obj->getNodePath()}\n".$obj->ownerDocument->saveXML($obj);
                //$retval .= $obj->ownerDocument->saveXML($obj);
                break;
            case ($obj instanceof DOMNodeList):
                for ($i = 0; $i < $obj->length; $i++) {
                    $retval .= "Item #$i, XPath: {$obj->item($i)->getNodePath()}\n".
"{$obj->item($i)->ownerDocument->saveXML($obj->item($i))}\n";
                }
                break;
            default:
                return "Instance of unknown class";
        }
    } else {
        return 'no elements...';
    }
    return htmlspecialchars($retval);
}
?>

Example usage:

<?php
$dom = new DomDocument();
$dom->load('test.xml');
$body = $dom->documentElement->getElementsByTagName('book');
echo '<pre>'.dom_dump($body).'<pre>';
?>

Output:

Instance of DOMNodeList, node list: 
Item #0, XPath: /library/book[1]
<book isbn="0345342968">
<title>Fahrenheit 451</title>
<author>R. Bradbury</author>
<publisher>Del Rey</publisher>
</book>
Item #1, XPath: /library/book[2]
<book isbn="0048231398">
<title>The Silmarillion</title>
<author>J.R.R. Tolkien</author>
<publisher>G. Allen &amp; Unwin</publisher>
</book>
Item #2, XPath: /library/book[3]
<book isbn="0451524934">
<title>1984</title>
<author>G. Orwell</author>
<publisher>Signet</publisher>
</book>
Item #3, XPath: /library/book[4]
<book isbn="031219126X">
<title>Frankenstein</title>
<author>M. Shelley</author>
<publisher>Bedford</publisher>
</book>
Item #4, XPath: /library/book[5]
<book isbn="0312863551">
<title>The Moon Is a Harsh Mistress</title>
<author>R. A. Heinlein</author>
<publisher>Orb</publisher>
</book>

down

sites.sitesbr.net ¶

11 years ago

How to objetify a DomDocument with hierarchy like:
<root>
    <item>
          <prop1>info1</prop1>
          <prop2>info2</prop2>
          <prop3>info3</prop3>
     </item>
    <item>
          <prop1>info1</prop1>
          <prop2>info2</prop2>
          <prop3>info3</prop3>
     </item>
</root>

It's possible to use in object style to retrieve information, as:

<?php
     $theNodeValue = $aitem->prop1;
?>

Here is the code: one Class and 2 functions.

<?php
 class ArrayNode{
       public $nodeName, $nodeValue;
 }

 function getChildNodeElements( $domNode ){
     $nodes = array();
     for( $i=0; $i < $domNode->childNodes->length; $i++){
       $cn = $domNode->childNodes->item($i);
       if( $cn->nodeType == 1){
           $nodes[] = $cn;
           }
     }
    return $nodes;
 }

 function getArrayNodes( $domDoc ){
     $res = array();

       for( $i=0; $i < $domDoc->childNodes->length; $i++){
       $cn = $domDoc->childNodes->item($i);
       # The first is the root tag...
          if( $cn->nodeType == 1){
               # But we want it's childNodes.
                $sub_cn = getChildNodeElements( $cn);
                # Found the tagName:
                $baseItemTagName = $sub_cn[0]->nodeName;
                break;
            }
        }

       $dnl = $domDoc->getElementsByTagName( $baseItemTagName);

       for( $i=0; $i< $dnl->length; $i++){
          $arrayNode = new ArrayNode();

      # Summary
      $arrayNode->nodeName = $dnl->item($i)->nodeName;
      $arrayNode->nodeValue = $dnl->item($i)->nodeValue;

      # Child Nodes
      $cn = $dnl->item($i)->childNodes;
      for( $k=0; $k<$cn->length; $k++){
           if( $cn->item($k)->nodeName == "#text" && trim($cn->item($k)->nodeValue) == "") continue;
           $arrayNode->{$cn->item($k)->nodeName} = $cn->item($k)->nodeValue;
      }

      # Attributes
      $attr = $dnl->item($i)->attributes;
      for( $k=0; $k < $attr->length; $k++){
           if(! is_null($attr)){
            if( $attr->item($k)->nodeName == "#text" && trim($attr->item($k)->nodeValue) == "") continue;
            $arrayNode->{$attr->item($k)->nodeName} = $attr->item($k)->nodeValue;
           }
      }

      $res[] = $arrayNode;

       }

     return $res;
 }
?>

To use it:

<?php

  # First you load a XML in a DomDocument variable.

   $url = "/path/to/yourxmlfile.xml";
   $domSrc = file_get_contents($url);
   $dom = new DomDocument();
   $dom->loadXML( $domSrc );

  # Then, you get the ArrayNodes from the DomDocument.

    $ans = getArrayNodes( $dom );

 
    for( $i=0; $i < count( $ans ) ; $i++){

    $cn =  $ans[ $i];

    $info1 =  $cn->prop1;
    $info2 =  $cn->prop2;
    $info3 =  $cn->prop3;
      
         // ...
 
   }

?>

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610010559 at qq dot com ¶

2 years ago

when you add the new element to formatted XML data through appendChild() method, you would the new element you add is not be formatted(that is not indexed, not line break).  here is my solution (in short load the xml without preserve white space, ), example show as below:
<?php
$doc = new \DOMDocument();
$doc->formatOutput = true;
$doc->preserveWhiteSpace = false;//that is key, default value is true. 
$doc->loadXML($xmlStr);
$doc->appendChild($doc->createElement('php', '666'))
$formattedXMLStr = $doc->saveXML();//DOMDocument wold format the xml str for you
echo $formattedXMlStr;
?>
it take me some time to try it out. hope it save your time.

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ashjkshdu283 at gmail dot com ¶

6 years ago

/* Function evolved from jay at jaygilford dot com post
  * This function will return an array of the values of the specified
  * attribute ($attr) for all the Dom Document object's elements 
  */

<?php

function getAttrData(string $attr, DomDocument $dom) { 
    // Empty array to hold all classes to return 
    $attrData = array(); 

    //Loop through each tag in the dom and add it's attribute data to the array 
    foreach($dom->getElementsByTagName('*') as $tag) {
        if(empty($tag->getAttribute($attr)) === false) {
            array_push($attrData, $tag->getAttribute($attr));
        }
    } 

    //Return the array of attribute data
    return array_unique($attrData); 
}

$html = '
<!DOCTYPE html>
<html>
<head>
<title>Page Title</title>
</head>
<body>
<a href="#someLink" id="someLink" class="link-class">Some Link</a>
<a href="#someOtherLink" id="someOtherLink" class="link-class">Some Other Link</a>
<h1 id="header1" class="header-class">My First Heading</h1>
<p id="para1" class="para-class">My first paragraph.</p>
</body>
</html>';
$dom = new DOMDocument();
$dom->loadHtml($html);
$dom->saveHTML();
var_dump(getAttrData('class', $dom));

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ingjetel at gmail dot com ¶

9 years ago

Easy function for basic output of XML file via DOM parsing

<?php
$dom = new DomDocument();
$dom->load("./file.xml") or die("error");
$start = $dom->documentElement;
fc($start);

function fc($node) {
  $child = $node->childNodes;
  foreach($child as $item) {
    if ($item->nodeType == XML_TEXT_NODE) {
      if (strlen(trim($item->nodeValue))) echo trim($item->nodeValue)."<br/>";
    }
    else if ($item->nodeType == XML_ELEMENT_NODE) fc($item);
  }
}
?>

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-1

danny dot nunez15 at gmail dot com ¶

11 years ago

A simple function to grab all links in a page. 

    function get_links($url) {

        // Create a new DOM Document to hold our webpage structure 
        $xml = new DOMDocument();

        // Load the url's contents into the DOM 

        $xml->loadHTMLFile($url);

        // Empty array to hold all links to return 
        $links = array();

        //Loop through each <a> tag in the dom and add it to the link array 
        foreach ($xml->getElementsByTagName('a') as $link) {
            $url = $link->getAttribute('href');
            if (!empty($url)) {
                $links[] = $link->getAttribute('href');
            }
        }

        //Return the links 
        return $links;
    }

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-2

admin at beerpla dot net ¶

14 years ago

After seeing many complaints about certain DOMDocument shortcomings, such as bad handling of encodings and always saving HTML fragments with <html>, <head>, and DOCTYPE, I decided that a better solution is needed.

So here it is: SmartDOMDocument. You can find it at http://beerpla.net/projects/smartdomdocument/

Currently, the main highlights are:

- SmartDOMDocument inherits from DOMDocument, so it's very easy to use - just declare an object of type SmartDOMDocument instead of DOMDocument and enjoy the new behavior on top of all existing functionality (see example below).

- saveHTMLExact() - DOMDocument has an extremely badly designed "feature" where if the HTML code you are loading does not contain <html> and <body> tags, it adds them automatically (yup, there are no flags to turn this behavior off).
Thus, when you call $doc->saveHTML(), your newly saved content now has <html><body> and DOCTYPE in it. Not very handy when trying to work with code fragments (XML has a similar problem).
SmartDOMDocument contains a new function called saveHTMLExact() which does exactly what you would want - it saves HTML without adding that extra garbage that DOMDocument does.

- encoding fix - DOMDocument notoriously doesn't handle encoding (at least UTF-8) correctly and garbles the output.
SmartDOMDocument tries to work around this problem by enhancing loadHTML() to deal with encoding correctly. This behavior is transparent to you - just use loadHTML() as you would normally.

- SmartDOMDocument Object As String - you can use a SmartDOMDocument object as a string which will print out its contents.
For example:
<?php
echo "Here is the HTML: $smart_dom_doc";
?>

I'm going to maintain this code and try to fix bugs as they come in.

Enjoy.

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-5

qrworld.net ¶

10 years ago

In this post http://softontherocks.blogspot.com/2014/11/descargar-el-contenido-de-una-url_11.html I found a simple way to get the content of a URL with DOMDocument, loadHTMLFile and saveHTML().

function getURLContent($url){
    $doc = new DOMDocument;
    $doc->preserveWhiteSpace = FALSE;
    @$doc->loadHTMLFile($url);
    return $doc->saveHTML();
}

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