PHP5 DOM Namespaces

[CHeeSeBLiND]

For some reason I simply can't get my head around how to do this. I'm using alexa web information service. I can retrieve the xml file easy enough.

Example:

<aws:UrlInfoResponse xmlns:aws="http://alexa.amazonaws.com/doc/2005-10-05/">
    <aws:Response xmlns:aws="http://awis.amazonaws.com/doc/2005-07-11">
        <aws:OperationRequest>
            <aws:RequestId>6c5adfea-ee7d-42d0-89a9-738b2bf4768e</aws:RequestId>
        </aws:OperationRequest><aws:UrlInfoResult><aws:Alexa>
  
      <aws:ContentData>
        <aws:DataUrl type="canonical">jokeaday.com/</aws:DataUrl>
        <aws:Asin>B00006BY9E</aws:Asin>
    
        <aws:SiteData>
          <aws:Title>Joke a Day</aws:Title>
          <aws:Description>Features jokes, one liners, twisted tunes, and quotes.Includes paid access to babe of the day and personals.</aws:Description>
          <aws:OnlineSince>17-Dec-1996</aws:OnlineSince>
        </aws:SiteData>
        <aws:AdultContent>no</aws:AdultContent>
      </aws:ContentData>

      <aws:TrafficData>
        <aws:DataUrl type="canonical">jokeaday.com/</aws:DataUrl>
        <aws:Asin>B00006BY9E</aws:Asin>
        <aws:Rank>73529</aws:Rank>
        <aws:ContributingSubdomains>
          <aws:ContributingSubdomain>
            <aws:DataUrl>jokeaday.com</aws:DataUrl>
            <aws:TimeRange>
              <aws:Months>1</aws:Months>
            </aws:TimeRange>
            <aws:Reach>
              <aws:Percentage>98%</aws:Percentage>
            </aws:Reach>
            <aws:PageViews>
              <aws:Percentage>97%</aws:Percentage>
              <aws:PerUser>3.0</aws:PerUser>
            </aws:PageViews>
          </aws:ContributingSubdomain>
          <aws:ContributingSubdomain>
            <aws:DataUrl>forums.jokeaday.com</aws:DataUrl>
            <aws:TimeRange>
              <aws:Months>1</aws:Months>
            </aws:TimeRange>
            <aws:Reach>
              <aws:Percentage>14%</aws:Percentage>
            </aws:Reach>
            <aws:PageViews>
              <aws:Percentage>3%</aws:Percentage>
              <aws:PerUser>3.7</aws:PerUser>
            </aws:PageViews>
          </aws:ContributingSubdomain>
        </aws:ContributingSubdomains>
        <aws:UsageStatistics>
          <aws:UsageStatistic>
            <aws:TimeRange>
              <aws:Months>3</aws:Months>
            </aws:TimeRange>
            <aws:Rank>
              <aws:Value>73,954</aws:Value>
              <aws:Delta>+11,088</aws:Delta>
            </aws:Rank>
            <aws:Reach>
              <aws:Rank>
                <aws:Value>71,089</aws:Value>
    
                <aws:Delta>+14,064</aws:Delta>
              </aws:Rank>
              <aws:PerMillion>
                <aws:Value>17.5</aws:Value>
                <aws:Delta>-26%</aws:Delta>
              </aws:PerMillion>
            </aws:Reach>
            <aws:PageViews>
              <aws:PerMillion>
                <aws:Value>0.8</aws:Value>
                <aws:Delta>-14%</aws:Delta>
              </aws:PerMillion>
              <aws:Rank>
                <aws:Value>93,805</aws:Value>
                <aws:Delta>+9,887</aws:Delta>
              </aws:Rank>
              <aws:PerUser>
                <aws:Value>3.2</aws:Value>
                <aws:Delta>+7%</aws:Delta>
              </aws:PerUser>
            </aws:PageViews>
          </aws:UsageStatistic>
          <aws:UsageStatistic>
            <aws:TimeRange>
              <aws:Months>1</aws:Months>
            </aws:TimeRange>
            <aws:Rank>
              <aws:Value>86,403</aws:Value>
              <aws:Delta>+17,456</aws:Delta>
            </aws:Rank>
            <aws:Reach>
              <aws:Rank>
                <aws:Value>85,629</aws:Value>
                <aws:Delta>+20,641</aws:Delta>
              </aws:Rank>
              <aws:PerMillion>
                <aws:Value>14.5</aws:Value>
                <aws:Delta>-22%</aws:Delta>
              </aws:PerMillion>
            </aws:Reach>
            <aws:PageViews>
              <aws:PerMillion>
                <aws:Value>0.7</aws:Value>
                <aws:Delta>-19%</aws:Delta>
              </aws:PerMillion>
              <aws:Rank>
                <aws:Value>106,609</aws:Value>
                <aws:Delta>+17,253</aws:Delta>
              </aws:Rank>
              <aws:PerUser>
                <aws:Value>3.5</aws:Value>
                <aws:Delta>+13%</aws:Delta>
              </aws:PerUser>
            </aws:PageViews>
          </aws:UsageStatistic>
          <aws:UsageStatistic>
            <aws:TimeRange>
              <aws:Days>7</aws:Days>
            </aws:TimeRange>
            <aws:Rank>
              <aws:Value>88,537</aws:Value>
              <aws:Delta>+423</aws:Delta>
            </aws:Rank>
            <aws:Reach>
              <aws:Rank>
                <aws:Value>82,560</aws:Value>
                <aws:Delta>-4,451</aws:Delta>
              </aws:Rank>
              <aws:PerMillion>
                <aws:Value>15</aws:Value>
                <aws:Delta>+3%</aws:Delta>
              </aws:PerMillion>
            </aws:Reach>
            <aws:PageViews>
              <aws:PerMillion>
                <aws:Value>0.63</aws:Value>
                <aws:Delta>-7%</aws:Delta>
              </aws:PerMillion>
              <aws:Rank>
                <aws:Value>119,168</aws:Value>
                <aws:Delta>+7,123</aws:Delta>
              </aws:Rank>
              <aws:PerUser>
                <aws:Value>2.8</aws:Value>
                <aws:Delta>-20%</aws:Delta>
              </aws:PerUser>
            </aws:PageViews>
          </aws:UsageStatistic>
          <aws:UsageStatistic>
            <aws:TimeRange>
              <aws:Days>1</aws:Days>
            </aws:TimeRange>
            <aws:Rank>
              <aws:Value>73,580</aws:Value>
              <aws:Delta>-831</aws:Delta>
            </aws:Rank>
            <aws:Reach>
              <aws:Rank>
                <aws:Value>62,203</aws:Value>
                <aws:Delta>-16,004</aws:Delta>
              </aws:Rank>
              <aws:PerMillion>
                <aws:Value>20</aws:Value>
                <aws:Delta>+33%</aws:Delta>
              </aws:PerMillion>
            </aws:Reach>
            <aws:PageViews>
              <aws:PerMillion>
                <aws:Value>0.8</aws:Value>
                <aws:Delta>-20%</aws:Delta>
              </aws:PerMillion>
              <aws:Rank>
                <aws:Value>109,185</aws:Value>
                <aws:Delta>+19,532</aws:Delta>
              </aws:Rank>
              <aws:PerUser>
                <aws:Value>2.5</aws:Value>
                <aws:Delta>-40%</aws:Delta>
              </aws:PerUser>
            </aws:PageViews>
          </aws:UsageStatistic>
        </aws:UsageStatistics>
      </aws:TrafficData>
    </aws:Alexa>
        </aws:UrlInfoResult>
        <aws:ResponseStatus xmlns:aws="http://alexa.amazonaws.com/doc/2005-10-05/">
            <aws:StatusCode>Success</aws:StatusCode>
        </aws:ResponseStatus>
    </aws:Response>
</aws:UrlInfoResponse>

I'm retrieve it via the following bit of code:

...
$result = $this->make_http_request($request_url);
$doc = new DOMDocument();
$doc->loadXML($result); 

When I echo $doc->saveHTML() the file shows alright, so that's not the problem.

My problem is, how do I retrieve the following bits of data from the xml file:

• aws: Title
• aws: Description
• aws: OnlineSince
• aws: AdultContent
• aws: Value & aws: Delta where aws: Months = 3

(there are spaces in the tag names to prevent those god damn smilies)

Any help would be greatly appreciated. This has got me tearing my hair out at the moment.

[Ghosty]

Well, are you sure you want to load it as DOM? I would use simplexml for parsing since it gives you access to basic DOM tools. Plus SimpleXML has the ever handy getDocNamespaces() function.

This is how I generally like to parse through something:

<?php

    

$xml = simplexml_load_file("file_or_query_path_goes_here", "cNode") or die ("Unable to load XML file!"); 

class cNode extends SimpleXMLElement {
    function getName() {
        return dom_import_simplexml($this)->nodeName;
    }

    function getType() {
        return dom_import_simplexml($this)->nodeType;
    }
}


 
foreach($xml->children() as $child){
	echo $child->getName() . ": ". $child . "<br/>";
		foreach($child->children() as $grandchild){
			echo "<br/>". $grandchild->getName() . ": ". $grandchild . "<br/><br/>";
			foreach($grandchild->children() as $greatgrandchild){
				echo $greatgrandchild->getName(). ": ". $greatgrandchild . "<br/>";
				foreach($greatgrandchild->children() as $greatgreatgrandchild){
					echo $greatgreatgrandchild->getName(). ", ". $greatgreatgrandchild. "<br/>";
				}
			}
		}
				
}
?>

The class is only important for early versions of PHP5 where the DOM library had bugs. If you have the current version of PHP5 you don't really need it. It doesn't do name spaces as is, but it is generic, which is nice.

You can see the other SimpleXML functions here:
http://uk.php.net/manual/en/function...dAttribute.php

[CHeeSeBLiND]

Hi thanks for the response.

I was trying to use simpleXML originally. When I try to use simplexml_load_string() with the return xml data stored in $result it tells me it can't load it.

...
$result = $this->make_http_request($request_url);
$doc = simplexml_load_string($result)
  or die('Unable to load XML'); 

When I try this it gives me the following:

Unable to load XML

[Dr Livingston]

If you change this,

or die('Unable to load XML'); 

To this, it should work,

or die('Able to load XML'); 

Give it a try, and see what you get?

[CHeeSeBLiND]

Haha, I somehow doubt that will make a difference :P

Any help on this would be awesome, as it's really beginning to drive me mad.

[CHeeSeBLiND]

bump.

[Ghosty]

Try loading it as a file rather than a string. Also I would add error_reporting(E_ALL); to the top of your PHP so you can find out what's causing your errors.

[CHeeSeBLiND]

I've tried loading it as a file before and it just chokes.

I always have my error reporting set to E_ALL but there's no error being thrown my way.

[Dr Livingston]

Looking at the manual you have this example,

$xml = <<<EOD
<?xml version="1.0" ?>
<chapter xmlns:xi="http://www.w3.org/2001/XInclude">
<title>Books of the other guy..</title>
<para>
<xi:include href="book.xml">
 <xi:fallback>
  <error>xinclude: book.xml not found</error>
 </xi:fallback>
</xi:include>
<include>
 This is another namespace
</include>
</para>
</chapter>
EOD;
$dom = new DOMDocument;

// load the XML string defined above
$dom->loadXML($xml);

foreach ($dom->getElementsByTagNameNS('http://www.w3.org/2001/XInclude', '*') as $element) {
   echo 'local name: ', $element->localName, ', prefix: ', $element->prefix, "\n";
}

But it appears you are not actually looking for tags specifically but their attributes, based on the given namespace it's self no?

You'll need to excuse me for not being of more help in this context, but I would check out the manual. Sorry can't be more help.

[Salathe]

The following appears to work (for me) though it may be far from an idea implementation:

<?php

/*
    * aws: Title
    * aws: Description
    * aws: OnlineSince
    * aws: AdultContent
    * aws: Value & aws: Delta where aws: Months = 3
*/

$xml = new SimpleXMLElement( file_get_contents( 'aws_result.xml' ) );
$xml->registerXPathNamespace("ns", "http://awis.amazonaws.com/doc/2005-07-11");

header('Content-Type: text/plain');
$aws = array();

$x = $xml->xpath("//ns:SiteData");
$n = $x[0]->children('http://awis.amazonaws.com/doc/2005-07-11');
$aws['Title'] = (string) $n->Title;
$aws['Description'] = (string) $n->Description;
$aws['OnlineSince'] = (string) $n->OnlineSince;

$x = $xml->xpath("//ns:AdultContent");
$aws['adult'] = (string) $x[0];

$x = $xml->xpath("//ns:UsageStatistic/ns:TimeRange[ns:Months = 3]/../ns:Rank");
$n= $x[0]->children('http://awis.amazonaws.com/doc/2005-07-11');
$aws['Value'] = (string) $n->Value;
$aws['Delta'] = (string) $n->Delta;

print_r($aws);

?>

Cheers,
Salathe

[CHeeSeBLiND]

Thanks, I'll give that a try.