PHP 7.0.6 Released

    DOMNode::hasChildNodes

    (PHP 5, PHP 7)

    DOMNode::hasChildNodes — Checks if node has children

    Description

    public bool DOMNode::hasChildNodes ( void )

    This function checks if the node has children.

    Return Values

    Returns TRUE on success or FALSE on failure.

    See Also

    User Contributed Notes

    richard dot gildx at gmail dot com
    3 years ago
    This "hasChildNodes()" exercise is simple enough to make it clear and understandable. Or, you could take it as a tag empty check. By Richard Holm, Sweden.

    <?php
    $xmldoc    =
    '<?xml version="1.0" ?>
    <root>
    <text>Text</text>
    <none/>
    <empty></empty>
    <space> </space>
    </root>'    ;

    $domdoc=new DOMDocument();
    $domdoc->loadXML($xmldoc);

    $tag=$domdoc->getElementsByTagName('root')->item(0);
    $v=$tag->hasChildNodes()?" hasChildNodes":" hasNoChildNodes";
    echo     $tag->tagName.$v."<br/>";

    $tag=$domdoc->getElementsByTagName('text')->item(0);
    $v=$tag->hasChildNodes()?" hasChildNodes":" hasNoChildNodes";
    echo     $tag->tagName.$v."<br/>";

    $tag=$domdoc->getElementsByTagName('none')->item(0);
    $v=$tag->hasChildNodes()?" hasChildNodes":" hasNoChildNodes";
    echo     $tag->tagName.$v."<br/>";

    $tag=$domdoc->getElementsByTagName('empty')->item(0);
    $v=$tag->hasChildNodes()?" hasChildNodes":" hasNoChildNodes";
    echo     $tag->tagName.$v."<br/>";

    $tag=$domdoc->getElementsByTagName('space')->item(0);
    $v=$tag->hasChildNodes()?" hasChildNodes":" hasNoChildNodes";
    echo     $tag->tagName.$v."<br/>";
    ?>

    Output:
    root hasChildNodes
    text hasChildNodes
    none hasNoChildNodes
    empty hasNoChildNodes
    space hasChildNodes
    syngcw at syncgw.com
    6 years ago
    This function is a bit tricky. If you want to find XML childnodes it is useless. You need to create a work-around:

    <?php

    $x     = new DOMDocument();
    $x->loadXML('
    <A>
    <B>b-text</B>
    <C>
      <D>d-text</D>
    </C>
    <E/>
    </A>'    );

    shownode($x->getElementsByTagName('A')->item(0));
    function     shownode($x) {
    foreach (    $x->childNodes as $p)
      if (    hasChild($p)) {
          echo     $p->nodeName.' -> CHILDNODES<br>';
              shownode($p);
      } elseif (    $p->nodeType == XML_ELEMENT_NODE)
       echo     $p->nodeName.' '.$p->nodeValue.'<br>';
    }
    function     hasChild($p) {
    if (    $p->hasChildNodes()) {
      foreach (    $p->childNodes as $c) {
       if (    $c->nodeType == XML_ELEMENT_NODE)
        return     true;
      }
    }
    return     false;
    }

    ?>

    shows:
    B b-text
    C -> CHILDNODES
    D d-text
    E
    sansana
    5 years ago
    Personally I think using a simple:[code]if($DOMNode->childNodes <>0){}[/code] works better.
    Anonymous
    1 year ago
    Hi what if its a dynamic file and we cannot use get elements by tag name then how do we print the contents of all level tags?
    jintoppy at gmail dot com
    7 years ago
    <?php

    $doc     = new DOMDocument;
    $node = $doc->createElement("FirstMain", "First Main Node. This have child");
    $doc->appendChild($node);
    $childnode = $doc->createElement("childnode", "child node");
    $node->appendChild($childnode);
    $secondnode = $doc->createElement("SecondMain", "First Main Node. This don't have child");
    $doc->appendChild($secondnode);
    $doc->saveXML();
    $nodeElmt = $doc->getElementsByTagName("FirstMain");
    /*
    if given as $nodeElmt = $doc->getElementsByTagName("childnode");
    the output would be "This node has childnodes"

    if given as $nodeElmt = $doc->getElementsByTagName("SecondMain");
    the output would be "This node has no childnodes"

    */

    foreach($nodeElmt as $nodeElmt)
    {
    if(    $nodeElmt->hasChildNodes())
    {
    echo     "This node has childnodes";
    }
    else
    {
    echo     "This node has no childnodes";
    }
    }

          ?>

    - - - - - - - - - - - - - -

    Output:

    This node has childnodes

    - - - - - - - - - - - - - -
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