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parse invalid RSS feed with no root elements to tranform into useable XML data

Posted on 2010-11-09
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Last Modified: 2013-11-18
I have a feed that is not valid RSS nor standard and can not be changed. I would like to pull elements of this feed like recent snow fall and current temperature.

Can anyone tell me what I need to do to pull the data from this feed:
http://common.snow.com/adminincludes/rtp.resorts.vri.xml.asp

I'm using Zend_Feed_Reader but I get an error that says the Feed is Invalid or not supported.

I've also tried Zend_Dom_Query to get the data but I'm stuck in the arrays and am not sure how to pull that data out. I thought maybe there was an easier way to do this through XSL Transformation or something of the like.

Thanks for any guidance.
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Question by:kent3800
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by:kent3800
ID: 34098235
Here is an example of my path down Dom_Query land:

$url = 'http://common.snow.com/adminincludes/rtp.resorts.vri.xml.asp';
            $client = new Zend_Http_Client($url);
            $response = $client->request();
            $html = $response->getBody();
            $dom = new Zend_Dom_Query($html);
            
            if(sizeof($dom->query('resort')) > 0) {
                  $resort = $dom->query('resort');
            } else {
                  $resort = NULL;
            }
            
            if($resort != NULL) {
                  foreach($resort as $index=>$result) {
                        if($result->nodeValue !== '') {
                              $resort = $result->nodeValue;
                        }
                  }
            }
            
            $data = array(
                  'resort'=>$resort,
                  'other'=>'variable'
            );
            $xml = (object) $data;
            var_dump($xml); die;

This is the dump with $resort not holding any data:
object(stdClass)#53 (2) { ["resort"]=> string(27) " " ["other"]=> string(8) "variable" }

Thanks
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LVL 111

Accepted Solution

by:
Ray Paseur earned 2000 total points
ID: 34101167
Did you ask Jeff about how other customers use the feed?
http://www.rtp.com/company/our-people-difranco.aspx

The XML is fairly "information-dense" (a good thing!) and I do not see anything wrong with it.  Install this code snippet and run it to see how this works.  Note the use of the "commented out" var_dump() commands - those are very helpful when you are debugging data-dependent issues.

Best of luck with it, ~Ray
<?php // RAY_temp_kent3800.php
error_reporting(E_ALL);

// MAKE var_dump() EASY TO READ
echo "<pre>";

// GET THE XML FROM THE WEB SERVICE AND MAKE AN OBJECT
$url = 'http://common.snow.com/adminincludes/rtp.resorts.vri.xml.asp';
$xml = trim(file_get_contents($url));
$obj = SimpleXML_Load_String($xml);

// ACTIVATE THIS TO SEE THE OBJECT
// var_dump($obj);

// GET INFORMATION FROM THE OBJECT
foreach ($obj->resort as $r)
{
    // var_dump($r);
    $d = $r["description"];
    $s = $r->snowreport;
    // var_dump($s);
    $t = $s->temperature;
    $n = $s->newsnow;
    $f = (string)$s->temperature["fahrenheit"];
    $l = (string)$n->last24hours["inches"];

    // REPORT THE CONDITIONS
    echo PHP_EOL . "$d  {$f}&deg;F, {$l}\" NEW SNOW";
}

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