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Subject:  Re: [PHP-DEV] unexpected behaviour in SimpleXML (php 5.2.2)
From: cem@php.net (Caroline Maynard)

Vesselin Kenashkov wrote:
> 
> Here is the first one - how one can find does a SimpleXMLElement has child
> nodes?
> Here is an example:
> --------
> $str = '<rootnode><subnode></subnode></rootnode>';
> $x = new SimpleXMLElement($str);
> 
> if($x->subnode->children())
>    print 'yes';
>    else
>        print 'no';
> ---------
> will print 'no';
> 
> If the
> $str='<rootnode><subnode><newnode></newnode></subnode></rootnode>';
> it will print yes.
> But the same will happen if the subnode has an attribute like:
> $str = '<rootnode><subnode id="2"></subnode></rootnode>';
> 
> But if we use foreach($x->subnode->children() as $key=>$value)
> in the latter example we will not get anything (which is correct).
> I think is wrong the children() method to return object when there are no
> child objects and the node has attributes.
> 
> The workaround I use is to extend the SimpleXMLElement
> --------
> class SimpleXMLElement2 extends SimpleXMLElement
> {
> public function has_children()
>    {
>    foreach($this->children() as $node)
>        return true;
>    return false;
>    }
> 
> }
> ------
> And then we can check with if($x->subnode->has_children())

That's how SimpleXML is, but you can ease your pain by using count():

$x = new SimpleXMLElement($str);

if (count($x->subnode->children()))
     print 'yes';
else
     print 'no';