[UPHPU] Accessing object elements with punctuation marks

[Alvaro Carrasco]

Richard K Miller wrote:
>
> On Mar 29, 2007, at 11:36 AM, Alvaro Carrasco wrote:
>
>>> But I can't access the next node down because it contains a hyphen:
>>>
>>>     print_r($xml->GetDomains->domain-list);  // produces error 
>>> because of hyphen
>>>
>>>
>> Wrap it in curly braces:
>>
>> $xml->GetDomains->{'domain-list'}
>>
>
> Awesome, that solved that.
>
> Any idea about this?
>
> This
> <?php print_r($xml->GetDomains->{'domain-list'}); ?>
> returns this:
>
> SimpleXMLElement Object
> (
>     [domain] => Array
>         (
>             [0] => SimpleXMLElement Object
>                 (
>                     [sld] => abc.com
>                 )
>
>             [1] => SimpleXMLElement Object
>                 (
>                     [sld] => def.com
>                 )
>     )
> )
>
>
> But when I type
> <?php print_r($xml->GetDomains->{'domain-list'})->domain; ?>
> it returns this:
>
> SimpleXMLElement Object
> (
>     [sld] => abc.com
> )
>
>
> I would expect the latter example to return both Objects in the array 
> but it's only returning the 0th.  It's treating these two statements 
> the same:
>
> <?php print_r($xml->GetDomains->{'domain-list'})->domain; ?>
> <?php print_r($xml->GetDomains->{'domain-list'})->domain[0]; ?>
>
>
One of the quirks of simplexml, it assumes 'grab the first one'. It's 
actually intended behavior, as unintuitive as it is.

I usually prefer xpath when grabbing data from xml, it's less quirky:
$domains = $xml->xpath('/GetDomain/domain-list/domain');

Alvaro