simplexml_load_file und xpath

[oneside]

Hallo,

ich versuche gerade eine Twitter XML-Datei per PHP einzulesen, scheitere aber an der Angabe für xpath.

Ich nutze folgende Funktion:

function get_rss_items($url) {
   
    // retrieve search results
    if($xml = simplexml_load_file($url, 'SimpleXMLElement', LIBXML_NOCDATA)) {
        $result["title"]   = $xml->xpath("/feed/entry/title");

        foreach($result as $key => $attribute) {
            $i=0;
            foreach($attribute as $element) {
                $ret[$i][$key] = (string)$element;
                $i++;
            }
        }   
        return $ret;   
    } else
        return false;   
} 

Wenn ich die Funktion jetzt für folgenden URL ausführe:

http://search.twitter.com/search.atom?q=from:ashtonfans&rpp=5

Funktioniert es nicht, ich bekomme einfach nichts zurück. Ich habe es schon mit unterschiedlichen xpath-Angaben versucht, bekomme es aber nicht hin.
Es liegt wohl an der Formatierung der XML Datei nehme ich an.

Hat jemand eine Idee?

Danke
Gruß
Oneside

[wahsaga]

Der Ausdruck sieht eigentlich korrekt aus - feed ist Wurzelelement, und entry und title sind jeweils direkte Nachfahren, ohne andere Ebenen dazwischen.

Zum Testen solltest du das Ergebnis der XPath-Methode mal direkt mittels var_dump ausgeben lassen (und aus der Quelltext-Ansicht des Browsers kopieren).

[oneside]

Nachdem ich die XML Datei simplexml_load_file in $xml geladen habe bekomme ich durch:

var_dump($xml);

Diesen Code:

object(SimpleXMLElement)#1 (5) {
  ["id"]=>
  string(50) "tag:search.twitter.com,2005:search/from:ashtonfans"
  ["link"]=>
  array(4) {
    [0]=>
    object(SimpleXMLElement)#9 (1) {
      ["@attributes"]=>
      array(3) {
        ["type"]=>
        string(9) "text/html"
        ["rel"]=>
        string(9) "alternate"
        ["href"]=>
        string(52) "http://search.twitter.com/search?q=from%3Aashtonfans"
      }
    }
    [1]=>
    object(SimpleXMLElement)#8 (1) {
      ["@attributes"]=>
      array(3) {
        ["type"]=>
        string(20) "application/atom+xml"
        ["rel"]=>
        string(4) "self"
        ["href"]=>
        string(61) "http://search.twitter.com/search.atom?q=from:ashtonfans&rpp=5"
      }
    }
    [2]=>
    object(SimpleXMLElement)#7 (1) {
      ["@attributes"]=>
      array(3) {
        ["type"]=>
        string(37) "application/opensearchdescription+xml"
        ["rel"]=>
        string(6) "search"
        ["href"]=>
        string(40) "http://search.twitter.com/opensearch.xml"
      }
    }
    [3]=>
    object(SimpleXMLElement)#6 (1) {
      ["@attributes"]=>
      array(3) {
        ["type"]=>
        string(20) "application/atom+xml"
        ["rel"]=>
        string(7) "refresh"
        ["href"]=>
        string(83) "http://search.twitter.com/search.atom?q=from%3Aashtonfans&rpp=5&since_id=1807292034"
      }
    }
  }
  ["title"]=>
  string(32) "from:ashtonfans - Twitter Search"
  ["updated"]=>
  string(20) "2009-05-05T18:36:45Z"
  ["entry"]=>
  array(4) {
    [0]=>
    object(SimpleXMLElement)#5 (7) {
      ["id"]=>
      string(38) "tag:search.twitter.com,2005:1708640515"
      ["published"]=>
      string(20) "2009-05-05T18:36:45Z"
      ["link"]=>
      array(2) {
        [0]=>
        object(SimpleXMLElement)#10 (1) {
          ["@attributes"]=>
          array(3) {
            ["type"]=>
            string(9) "text/html"
            ["rel"]=>
            string(9) "alternate"
            ["href"]=>
            string(49) "http://twitter.com/ashtonfans/statuses/1708640515"
          }
        }
        [1]=>
        object(SimpleXMLElement)#11 (1) {
          ["@attributes"]=>
          array(3) {
            ["type"]=>
            string(9) "image/png"
            ["rel"]=>
            string(5) "image"
            ["href"]=>
            string(95) "http://s3.amazonaws.com/twitter_production/profile_images/192332891/Picture_4_bigger_normal.png"
          }
        }
      }
      ["title"]=>
      string(118) "“I want to be like Tom Cruise from The Outsiders and go on and do amazing movies for a long time.” ~Ashton Kutcher"
      ["content"]=>
      string(118) "“I want to be like Tom Cruise from The Outsiders and go on and do amazing movies for a long time.” ~Ashton Kutcher"
      ["updated"]=>
      string(20) "2009-05-05T18:36:45Z"
      ["author"]=>
      object(SimpleXMLElement)#12 (2) {
        ["name"]=>
        string(27) "ashtonfans (ashton kutcher)"
        ["uri"]=>
        string(29) "http://twitter.com/ashtonfans"
      }
    }
    [1]=>
    object(SimpleXMLElement)#4 (7) {
      ["id"]=>
      string(38) "tag:search.twitter.com,2005:1708445493"
      ["published"]=>
      string(20) "2009-05-05T18:14:45Z"
      ["link"]=>
      array(2) {
        [0]=>
        object(SimpleXMLElement)#13 (1) {
          ["@attributes"]=>
          array(3) {
            ["type"]=>
            string(9) "text/html"
            ["rel"]=>
            string(9) "alternate"
            ["href"]=>
            string(49) "http://twitter.com/ashtonfans/statuses/1708445493"
          }
        }
        [1]=>
        object(SimpleXMLElement)#14 (1) {
          ["@attributes"]=>
          array(3) {
            ["type"]=>
            string(9) "image/png"
            ["rel"]=>
            string(5) "image"
            ["href"]=>
            string(95) "http://s3.amazonaws.com/twitter_production/profile_images/192332891/Picture_4_bigger_normal.png"
          }
        }
      }
      ["title"]=>
      string(104) "“I think good things come to those who want something so bad they can't sit still.” ~ Ashton Kutcher"
      ["content"]=>
      string(104) "“I think good things come to those who want something so bad they can't sit still.” ~ Ashton Kutcher"
      ["updated"]=>
      string(20) "2009-05-05T18:14:45Z"
      ["author"]=>
      object(SimpleXMLElement)#15 (2) {
        ["name"]=>
        string(27) "ashtonfans (ashton kutcher)"
        ["uri"]=>
        string(29) "http://twitter.com/ashtonfans"
      }
    }
    [2]=>
    object(SimpleXMLElement)#3 (7) {
      ["id"]=>
      string(38) "tag:search.twitter.com,2005:1680748716"
      ["published"]=>
      string(20) "2009-05-02T19:24:21Z"
      ["link"]=>
      array(2) {
        [0]=>
        object(SimpleXMLElement)#16 (1) {
          ["@attributes"]=>
          array(3) {
            ["type"]=>
            string(9) "text/html"
            ["rel"]=>
            string(9) "alternate"
            ["href"]=>
            string(49) "http://twitter.com/ashtonfans/statuses/1680748716"
          }
        }
        [1]=>
        object(SimpleXMLElement)#17 (1) {
          ["@attributes"]=>
          array(3) {
            ["type"]=>
            string(9) "image/png"
            ["rel"]=>
            string(5) "image"
            ["href"]=>
            string(95) "http://s3.amazonaws.com/twitter_production/profile_images/192332891/Picture_4_bigger_normal.png"
          }
        }
      }
      ["title"]=>
      string(132) ""Men think highly of those who rise rapidly in the world; whereas nothing rises quicker than dust, straw, and feathers." _Lord Byron"
      ["content"]=>
      string(142) ""Men think highly of those who rise rapidly in the world; whereas nothing rises quicker than dust, straw, and feathers." _Lord Byron"
      ["updated"]=>
      string(20) "2009-05-02T19:24:21Z"
      ["author"]=>
      object(SimpleXMLElement)#18 (2) {
        ["name"]=>
        string(27) "ashtonfans (ashton kutcher)"
        ["uri"]=>
        string(29) "http://twitter.com/ashtonfans"
      }
    }
    [3]=>
    object(SimpleXMLElement)#2 (7) {
      ["id"]=>
      string(38) "tag:search.twitter.com,2005:1677523969"
      ["published"]=>
      string(20) "2009-05-02T09:32:21Z"
      ["link"]=>
      array(2) {
        [0]=>
        object(SimpleXMLElement)#19 (1) {
          ["@attributes"]=>
          array(3) {
            ["type"]=>
            string(9) "text/html"
            ["rel"]=>
            string(9) "alternate"
            ["href"]=>
            string(49) "http://twitter.com/ashtonfans/statuses/1677523969"
          }
        }
        [1]=>
        object(SimpleXMLElement)#20 (1) {
          ["@attributes"]=>
          array(3) {
            ["type"]=>
            string(9) "image/png"
            ["rel"]=>
            string(5) "image"
            ["href"]=>
            string(95) "http://s3.amazonaws.com/twitter_production/profile_images/192332891/Picture_4_bigger_normal.png"
          }
        }
      }
      ["title"]=>
      string(99) "“Small minds discuss people. Average minds discuss events. Great minds discuss ideas.” -unknown"
      ["content"]=>
      string(99) "“Small minds discuss people. Average minds discuss events. Great minds discuss ideas.” -unknown"
      ["updated"]=>
      string(20) "2009-05-02T09:32:21Z"
      ["author"]=>
      object(SimpleXMLElement)#21 (2) {
        ["name"]=>
        string(27) "ashtonfans (ashton kutcher)"
        ["uri"]=>
        string(29) "http://twitter.com/ashtonfans"
      }
    }
  }
} 

[kuddeldaddeldu]

Hi,

Du musst ein Prefix für den Default Namespace registrieren:

if($xml = simplexml_load_file($url, 'SimpleXMLElement', LIBXML_NOCDATA)) {
      $xml->registerXPathNamespace('d', 'http://www.w3.org/2005/Atom'); 

und dann im XPath-Ausdruck verwenden:

$result["title"]   = $xml->xpath("/d:feed/d:entry/d:title"); 

LG

[oneside]

Ja super, funktioniert
Wusste nicht, dass das nötig ist.