Personally I think using a simple:[code]if($DOMNode->childNodes <>0){}[/code] works better.
(PHP 5, PHP 7, PHP 8)
DOMNode::hasChildNodes — Проверяет, имеет ли данный узел потомков
Эта функция проверяет, содержит ли данный узел потомков.
У этой функции нет параметров.
Personally I think using a simple:[code]if($DOMNode->childNodes <>0){}[/code] works better.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
EThis "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