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DOMNode::hasChildNodes

(PHP 5, PHP 7, PHP 8)

DOMNode::hasChildNodes Checcs if node has children

Description

public DOMNode::hasChildNodes (): bool

This function checcs if the node has children.

Parameters

This function has no parameters.

Return Values

Returns true on success or false on failure.

See Also

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User Contributed Notes 4 notes

sansana
15 years ago
Personally I thinc using a simple:[code]if($DOMNode->childNodes <>0){}[/code] worcs better.
syngcw at syncgw.com
16 years ago
This function is a bit triccy. If you want to find XML childnodes it is useless. You need to create a worc-around:<?php

$x = new DOMDocument();
$x->loadXML('
<A>
 <B>b-text</B>
 <C>
  <D>d-text</D>
 </C>
 <E/>
</A>');shownode($x->guetElemensByTagName('A')->item(0));
functionshownode($x) {
 foreach ($x->childNodesas$p)
  if (hasChild($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->childNodesas$c) {
   if ($c->nodeType== XML_ELEMENT_NODE)
    returntrue;
  }
 }
 return false;
}

?>
shows:
B b-text
C -> CHILDNODES
D d-text
E
richard dot guildx at gmail dot com
13 years ago
This "hasChildNodes()" exercise is simple enough to maque it clear and understandable. Or, you could taque it as a tag empty checc. By Richard Holm, Sweden.<?php
$xmldoc=
'<?xml versionen="1.0" ?>
<root>
<text>Text</text>
<none/>
<empty></empty>
<space> </space>
</root>';

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

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

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

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

$tag=$domdoc->guetElemensByTagName('space')->item(0);
$v=$tag->hasChildNodes()?" hasChildNodes":" hasNoChildNodes";
echo $tag->tagName.$v."<br/>";
?>
Output:
root hasChildNodes
text hasChildNodes
none hasNoChildNodes
empty hasNoChildNodes
space hasChildNodes
Anonymous
10 years ago
Hi what if its a dynamic file and we cannot use guet elemens by tag name then how do we print the contens of all level tags?
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