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    User Contributed Notes 38 notes

    up
    11
    tobiasz.cudnik[at]gmail.com
    16 years ago
    If you need simple interface to DOM check out phpQuery - jQuery port to PHP:
    http://code.google.com/p/phpquery/

    It uses CSS selectors to fetch nodes.
    Here's example how it works:
    <?php
    // just one file to include
    require('phpQuery/phpQuery.php');

    $html = '
    <div>
    mydiv
    <ul>
    <li>1</li>
    <li>2</li>
    <li>3</li>
    </ul>
    </div>'    ;

    // intialize new DOM from markup
    phpQuery::newDocument($markup)
    ->    find('ul > li')
    ->    addClass('my-new-class')
    ->    filter(':last')
    ->    addClass('last-li');

    // query all unordered lists in last used DOM
    pq('ul')->insertAfter('div');

    // iterate all LIs from last used DOM
    foreach(pq('li') as $li) {
    // iteration returns plain DOM nodes, not phpQuery objects
    pq($li)->addClass('my-second-new-class');
    }

    // same as pq('anything')->htmlOuter()
    // but on document root (returns doctype etc)
    print phpQuery::getDocument();
    ?>

    It uses DOM extension and XPath so it works only in PHP5.
    up
    5
    Yanik <clonyara(at)ahoo(dot)com>
    17 years ago
    I hate DOM model !
    so I wrote dom2array simple function (simple for use):

    function dom2array($node) {
    $res = array();
    print $node->nodeType.'<br/>';
    if($node->nodeType == XML_TEXT_NODE){
    $res = $node->nodeValue;
    }
    else{
    if($node->hasAttributes()){
    $attributes = $node->attributes;
    if(!is_null($attributes)){
    $res['@attributes'] = array();
    foreach ($attributes as $index=>$attr) {
    $res['@attributes'][$attr->name] = $attr->value;
    }
    }
    }
    if($node->hasChildNodes()){
    $children = $node->childNodes;
    for($i=0;$i<$children->length;$i++){
    $child = $children->item($i);
    $res[$child->nodeName] = dom2array($child);
    }
    }
    }
    return $res;
    }
    up
    3
    super dot puma at gmail dot com
    10 years ago
    If you want to print the DOM XML file content, you can use the next code:

    $doc = new DOMDocument();
    $doc->load($xmlFileName);
    echo "<br>" . $doc->documentURI;
    $x = $doc->documentElement;
    getNodeContent($x->childNodes, 0);

    function getNodeContent($nodes, $level){
    foreach ($nodes AS $item) {
    // print "<br><br>TIPO: " . $item->nodeType ;
    printValues($item, $level);
    if ($item->nodeType == 1) { //DOMElement
    foreach ($item->attributes AS $itemAtt) {
    printValues($itemAtt, $level+3);
    }
    if($item->childNodes || $item->childNodes->lenth > 0) {
    getNodeContent($item->childNodes, $level+5);
    }
    }
    }
    }

    function printValues($item, $level){
    if ($item->nodeType == 1) { //DOMElement
    printLevel($level);
    print $item->nodeName . " = " . $item->nodeValue;
    }
    if ($item->nodeType == 2) { //DOMAttr
    printLevel($level);
    print $item->name . " = " . $item->value ;
    }
    if ($item->nodeType == 3) { //DOMText
    if ($item->isWhitespaceInElementContent() == false){
    printLevel($level);
    print $item->wholeText ;
    }
    }
    }

    function printLevel($level)
    {
    print "<br>";
    if ($level == 0) {
    print "<br>";
    }
    for($i=0; $i < $level; $i++) {
    print "-";
    }
    }
    up
    2
    pes_cz
    19 years ago
    When I tried to parse my XHTML Strict files with DOM extension, it couldn't understand xhtml entities (like &copy;). I found post about it here (14-Jul-2005 09:05) which adviced to add resolveExternals = true, but it was very slow. There was some small note about xml catalogs but without any glue. Here it is:

    XML catalogs is something like cache. Download all needed dtd's to /etc/xml, edit file /etc/xml/catalog and add this line: <public publicId="-//W3C//DTD XHTML 1.0 Strict//EN" uri="file:///etc/xml/xhtml1-strict.dtd" />

    Thats all. Thanks to http://www.whump.com/moreLikeThis/link/03815
    up
    2
    simlee at indiana dot edu
    18 years ago
    The project I'm currently working on uses XPaths to dynamically navigate through chunks of an XML file. I couldn't find any PHP code on the net that would build the XPath to a node for me, so I wrote my own function. Turns out it wasn't as hard as I thought it might be (yay recursion), though it does entail using some PHP shenanigans...

    Hopefully it'll save someone else the trouble of reinventing this wheel.

    <?php
    function getNodeXPath( $node ) {
    // REMEMBER THAT XPATHS USE BASE-1 INSTEAD OF BASE-0!!!

    // Get the index for the current node by looping through the siblings.
    $parentNode = $node->parentNode;
    if(     $parentNode != null ) {
    $nodeIndex = 0;
    do {
    $testNode = $parentNode->childNodes->item( $nodeIndex );
    $nodeName = $testNode->nodeName;
    $nodeIndex++;

    // PHP trickery! Here we create a counter based on the node
    // name of the test node to use in the XPath.
    if( !isset( $$nodeName ) ) $$nodeName = 1;
    else $    $nodeName++;

    // Failsafe return value.
    if( $nodeIndex > $parentNode->childNodes->length ) return( "/" );
    } while( !    $node->isSameNode( $testNode ) );

    // Recursively get the XPath for the parent.
    return( getNodeXPath( $parentNode ) . "/{$node->nodeName}[{$$nodeName}]" );
    } else {
    // Hit the root node! Note that the slash is added when
    // building the XPath, so we return just an empty string.
    return( "" );
    }
    }
    ?>
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    2
    johanwthijs-at-hotmail-dot-com
    19 years ago
    Being an experienced ASP developer I was wondering how to replace textual content of a node (with msxml this is simply acheived by setting the 'text' property of a node). Out of frustration I started to play around with SimpleXml but I could not get it to work in combination with xPath.

    I took me a lot of time to find out so I hope this helps others:

    function replaceNodeText($objXml, $objNode, $strNewContent){
    /*
    This function replaces a node's string content with strNewContent
    */
    $objNodeListNested = &$objNode->childNodes;
    foreach ( $objNodeListNested as $objNodeNested ){
    if ($objNodeNested->nodeType == XML_TEXT_NODE)$objNode->removeChild ($objNodeNested);
    }

    $objNode->appendChild($objXml->createTextNode($strNewContent));
    }

    $objXml= new DOMDocument();
    $objXml->loadXML('<root><node id="1">bla</note></root>');
    $objXpath = new domxpath($objXml);

    $strXpath="/root/node[@id='1']";
    $objNodeList = $objXpath ->query($strXpath);
    foreach ($objNodeList as $objNode){
    //pass the node by reference
    replaceNodeText($objXml, &$objNode, $strImportedValue);
    }
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    2
    cooper at asu dot ntu-kpi dot kiev dot ua
    18 years ago
    If you are using not object-oriented functions and it takes too much time to change them all (or you'll be replacing them later) then as a temporary decision can be used this modules:

    For DOM XML:
    http://alexandre.alapetite.net/doc-alex/domxml-php4-php5/

    For XSLT:
    http://alexandre.alapetite.net/doc-alex/xslt-php4-php5/
    up
    2
    aidan at php dot net
    19 years ago
    When dealing with validation or loading, the output errors can be quite annoying.

    PHP 5.1 introduces libxml_get_errors().

    http://php.net/libxml_get_errors
    up
    2
    aidan at php dot net
    19 years ago
    As of PHP 5.1, libxml options may be set using constants rather than the use of proprietary DomDocument properties.

    DomDocument->resolveExternals is equivilant to setting
    LIBXML_DTDLOAD
    LIBXML_DTDATTR

    DomDocument->validateOnParse is equivilant to setting
    LIBXML_DTDLOAD
    LIBXML_DTDVALID

    PHP 5.1 users are encouraged to use the new constants.

    Example:

    DomDocument->load($file, LIBXML_DTDLOAD|LIBXML_DTDATTR);

    DomDocument->load($file, LIBXML_DTDLOAD|LIBXML_DTDVALID);
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    1
    toby at tobiasly dot com
    19 years ago
    This module is not included by default either in the CentOS 4 "centosplus" repository. For those using PHP5 on CentOS 4, a simple "yum --enablerepo=centosplus install php-xml" will do the trick (this will install both the XML and DOM modules).
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    2
    sweisman at pobox dot com
    15 years ago
    I had problems with the dom2array_full function by "nospam at ya dot ru". Here's my function, which works correctly for my project, and might work for yours:

    <?php
    function dom_to_array($root)
    {
    $result = array();

    if (    $root->hasAttributes())
    {
    $attrs = $root->attributes;

    foreach (    $attrs as $i => $attr)
    $result[$attr->name] = $attr->value;
    }

    $children = $root->childNodes;

    if (    $children->length == 1)
    {
    $child = $children->item(0);

    if (    $child->nodeType == XML_TEXT_NODE)
    {
    $result['_value'] = $child->nodeValue;

    if (    count($result) == 1)
    return     $result['_value'];
    else
    return     $result;
    }
    }

    $group = array();

    for(    $i = 0; $i < $children->length; $i++)
    {
    $child = $children->item($i);

    if (!isset(    $result[$child->nodeName]))
    $result[$child->nodeName] = dom_to_array($child);
    else
    {
    if (!isset(    $group[$child->nodeName]))
    {
    $tmp = $result[$child->nodeName];
    $result[$child->nodeName] = array($tmp);
    $group[$child->nodeName] = 1;
    }

    $result[$child->nodeName][] = dom_to_array($child);
    }
    }

    return     $result;
    }
    ?>
    up
    1
    PHPdeveloper
    17 years ago
    The Yanik's dom2array() function (added on 14-Mar-2007 08:40) does not handle multiple nodes with the same name, i.e.:

    <foo>
    <name>aa</name>
    <name>bb</name>
    </foo>

    It will overwrite former and your array will contain just the last one ("bb")
    up
    1
    amir.laherATcomplinet.com
    19 years ago
    This particular W3C page provides invaluable documentation for the DOM classes implemented in php5 (via libxml2). It fills in plenty of php.net's gaps:

    http://www.w3.org/TR/DOM-Level-2-Core/core.html

    Some key examples:
    * concise summary of the class heirachy (1.1.1)
    * clarification that DOM level 2 doesn't allow for population of internal DTDs
    * explanation of DOMNode->normalize()
    * explanation of the DOMImplementation class

    The interfaces are described in OMG's Interface Definition Language
    up
    1
    ohcc at 163 dot com
    9 years ago
    <?php
    // this note is about how to get a DOMNode's outerHTML and innerHTML.
    $dom = new DOMDocument('1.0','UTF-8');
    $dom->loadHTML('<html><body><div><p>p1</p><p>p2</p></div></body></html>');
    $node = $dom->getElementsByTagName('div')->item(0);
    $outerHTML = $node->ownerDocument->saveHTML($node);
    $innerHTML = '';
    foreach (    $node->childNodes as $childNode){
    $innerHTML .= $childNode->ownerDocument->saveHTML($childNode);
    }
    echo     '<h2>outerHTML: </h2>';
    echo     htmlspecialchars($outerHTML);
    echo     '<h2>innerHTML: </h2>';
    echo     htmlspecialchars($innerHTML);
    ?>