undefiniert Namespacepräfix

i Yahoo Wetter API bin mitundefiniert Namespacepräfix

$result = file_get_contents('https://query.yahooapis.com/v1/public/yql?q=select%20*%20from%20weather.forecast%20where%20woeid%20in%20(select%20woeid%20from%20geo.places(1)%20where%20text%3D%22Sarajevo%22)&format=xml&env=store%3A%2F%2Fdatatables.org%2Falltableswithkeys'); 
$xml = simplexml_load_string($result); 
//echo htmlspecialchars($result, ENT_QUOTES, 'UTF-8'); 
$xml->registerXPathNamespace('yweather', 'http://xml.weather.yahoo.com/ns/rss/1.0'); 
    $weather_location = $xml->channel->xpath('yweather:location'); 
    if(!empty($weather_location)){ 
     foreach($xml->channel->item as $item){ 

      $forecast = $item->xpath('yweather:forecast');  
      $time = time(); 
      $wdate = strtotime($forecast[$i]['day']); 

      echo "".(string)$wdate.""; // Wed  
      echo "<span><b>".(int)$forecast[$i]['high']."°</b>";// 8 
      echo "&nbsp;".(int)$forecast[$i]['low']."°</span>"; // 19  
     }    
}

XML-Beispiel:

<?xml version="1.0" encoding="UTF-8"?> 
<query xmlns:yahoo="http://www.yahooapis.com/v1/base.rng" 
    yahoo:count="1" yahoo:created="2016-03-31T10:56:53Z" yahoo:lang="en-US"> 
    <results> 
     <channel> 
      <yweather:units 
       xmlns:yweather="http://xml.weather.yahoo.com/ns/rss/1.0" 
       distance="mi" pressure="in" speed="mph" temperature="F"/> 
      <title>Yahoo! Weather - Sarajevo, Federacija Bosne I Hercegovine, BA</title> 
      <link>http://us.rd.yahoo.com/dailynews/rss/weather/Country__Country/*https://weather.yahoo.com/country/state/city-943828/</link> 
      <description>Yahoo! Weather for Sarajevo, Federacija Bosne I Hercegovine, BA</description> 
      <language>en-us</language> 
      <lastBuildDate>Thu, 31 Mar 2016 12:56 PM CEST</lastBuildDate> 
      <ttl>60</ttl> 
      <yweather:location 
       xmlns:yweather="http://xml.weather.yahoo.com/ns/rss/1.0" 
       city="Sarajevo" country="Bosnia and Herzegovina" region=" Federacija Bosne I Hercegovine"/> 
      <yweather:wind 
       xmlns:yweather="http://xml.weather.yahoo.com/ns/rss/1.0" 
       chill="70" direction="270" speed="4"/> 
      <yweather:atmosphere 
       xmlns:yweather="http://xml.weather.yahoo.com/ns/rss/1.0" 
       humidity="43" pressure="922.0" rising="0" visibility="16.1"/> 
      <yweather:astronomy 
       xmlns:yweather="http://xml.weather.yahoo.com/ns/rss/1.0" 
       sunrise="6:27 am" sunset="7:14 pm"/> 
      <image> 
       <title>Yahoo! Weather</title> 
       <width>142</width> 
       <height>18</height> 
       <link>http://weather.yahoo.com</link> 
       <url>http://l.yimg.com/a/i/brand/purplelogo//uh/us/news-wea.gif</url> 
      </image> 
      <item> 
       <title>Conditions for Sarajevo, Federacija Bosne I Hercegovine, BA at 12:00 PM CEST</title> 
       <geo:lat xmlns:geo="http://www.w3.org/2003/01/geo/wgs84_pos#">43.853161</geo:lat> 
       <geo:long xmlns:geo="http://www.w3.org/2003/01/geo/wgs84_pos#">18.38493</geo:long> 
       <link>http://us.rd.yahoo.com/dailynews/rss/weather/Country__Country/*https://weather.yahoo.com/country/state/city-943828/</link> 
       <pubDate>Thu, 31 Mar 2016 12:00 PM CEST</pubDate> 
       <yweather:condition 
        xmlns:yweather="http://xml.weather.yahoo.com/ns/rss/1.0" 
        code="32" date="Thu, 31 Mar 2016 12:00 PM CEST" 
        temp="69" text="Sunny"/> 
       <yweather:forecast 
        xmlns:yweather="http://xml.weather.yahoo.com/ns/rss/1.0" 
        code="30" date="31 Mar 2016" day="Thu" high="70" 
        low="41" text="Partly Cloudy"/> 
       <yweather:forecast 
        xmlns:yweather="http://xml.weather.yahoo.com/ns/rss/1.0" 
        code="28" date="01 Apr 2016" day="Fri" high="72" 
        low="50" text="Mostly Cloudy"/> 
       <yweather:forecast 
        xmlns:yweather="http://xml.weather.yahoo.com/ns/rss/1.0" 
        code="30" date="02 Apr 2016" day="Sat" high="68" 
        low="44" text="Partly Cloudy"/> 
       <yweather:forecast 
        xmlns:yweather="http://xml.weather.yahoo.com/ns/rss/1.0" 
        code="30" date="03 Apr 2016" day="Sun" high="69" 
        low="45" text="Partly Cloudy"/> 
       <yweather:forecast 
        xmlns:yweather="http://xml.weather.yahoo.com/ns/rss/1.0" 
        code="30" date="04 Apr 2016" day="Mon" high="69" 
        low="47" text="Partly Cloudy"/> 
       <yweather:forecast 
        xmlns:yweather="http://xml.weather.yahoo.com/ns/rss/1.0" 
        code="30" date="05 Apr 2016" day="Tue" high="69" 
        low="47" text="Partly Cloudy"/> 
       <yweather:forecast 
        xmlns:yweather="http://xml.weather.yahoo.com/ns/rss/1.0" 
        code="30" date="06 Apr 2016" day="Wed" high="69" 
        low="47" text="Partly Cloudy"/> 
       <yweather:forecast 
        xmlns:yweather="http://xml.weather.yahoo.com/ns/rss/1.0" 
        code="28" date="07 Apr 2016" day="Thu" high="66" 
        low="49" text="Mostly Cloudy"/> 
       <yweather:forecast 
        xmlns:yweather="http://xml.weather.yahoo.com/ns/rss/1.0" 
        code="28" date="08 Apr 2016" day="Fri" high="58" 
        low="50" text="Mostly Cloudy"/> 
       <yweather:forecast 
        xmlns:yweather="http://xml.weather.yahoo.com/ns/rss/1.0" 
        code="28" date="09 Apr 2016" day="Sat" high="58" 
        low="47" text="Mostly Cloudy"/> 
       <description>&lt;![CDATA[&lt;img src="http://l.yimg.com/a/i/us/we/52/32.gif"/&gt; 
&lt;BR /&gt; 
&lt;b&gt;Current Conditions:&lt;/b&gt; 
&lt;BR /&gt;Sunny 
&lt;BR /&gt; 
&lt;BR /&gt; 
&lt;b&gt;Forecast:&lt;/b&gt; 
&lt;BR /&gt; Thu - Partly Cloudy. High: 70Low: 41 
&lt;BR /&gt; Fri - Mostly Cloudy. High: 72Low: 50 
&lt;BR /&gt; Sat - Partly Cloudy. High: 68Low: 44 
&lt;BR /&gt; Sun - Partly Cloudy. High: 69Low: 45 
&lt;BR /&gt; Mon - Partly Cloudy. High: 69Low: 47 
&lt;BR /&gt; 
&lt;BR /&gt; 
&lt;a href="http://us.rd.yahoo.com/dailynews/rss/weather/Country__Country/*https://weather.yahoo.com/country/state/city-943828/"&gt;Full Forecast at Yahoo! Weather&lt;/a&gt; 
&lt;BR /&gt; 
&lt;BR /&gt; 
(provided by &lt;a href="http://www.weather.com" &gt;The Weather Channel&lt;/a&gt;) 
&lt;BR /&gt; 
]]&gt;</description> 
       <guid isPermaLink="false"/> 
      </item> 
     </channel> 
    </results> 
</query>

Dies ist das Ergebnis:

Warnung: SimpleXMLElement :: XPath() [SimpleXMLElement .xpath]: Undefiniertes Namespacepräfix in /home/ugbosnia/public_html/blocks/weather/block.php in Zeile 8

Warnung: SimpleXMLElement :: XPath() [simplexmlelement.xpath]: xmlXPathEval: failed Auswertung in /home/ugbosnia/public_html/blocks/weather/block.php on line 8

Jeder Vorschlag?

Quelle

2016-03-31 Ahmed Gharamti

Eigentlich XML ist recht einfach zu verarbeiten wi der X-Pfad. @ Ahmed-Gharamy Kannst du bitte ein kleines Beispiel XML zur Frage hinzufügen. Wenn ich die URL anrufe, erhalte ich einen meist leeren XML-Code, der nicht mit Ihrer Quelle übereinstimmt. – ThW

Ich habe Beispiel-XML hinzugefügt –

Der channel ist kein untergeordneter Knoten des Dokumentelements. Wenn Sie das XML lesen, ist das Dokumentelement query mit einem Kind results. Ich schlage vor, die channel in einer eigenen Variable zu speichern:

$channel = $xml->results->channel;

Sie den Namespace auf jeden SimpleXMLElement registrieren, bevor Sie seine xpath() Methode verwenden. In Ihrem Fall registrieren Sie es auf der $xml, aber Sie registrieren es nicht auf die $channel oder $item Objekte. $ xml = simplexml_load_string ($ result);

$channel = $xml->results->channel; 
$channel->registerXPathNamespace('yweather', 'http://xml.weather.yahoo.com/ns/rss/1.0'); 

$weather_location = $channel->xpath('yweather:location'); 
if(!empty($weather_location)){ 
    foreach($channel->item as $item){ 
    $item->registerXPathNamespace('yweather', 'http://xml.weather.yahoo.com/ns/rss/1.0'); 

    $forecast = $item->xpath('yweather:forecast');  
    var_dump($forecast);  
    }  
}

Ausgang:

array(10) { 
    [0]=> 
    object(SimpleXMLElement)#8 (1) { 
    ["@attributes"]=> 
    array(6) { 
     ["code"]=> 
     string(2) "30" 
     ["date"]=> 
     string(11) "31 Mar 2016" 
     ["day"]=> 
     string(3) "Thu" 
     ["high"]=> 
     string(2) "70" 
     ["low"]=> 
     string(2) "41" 
     ["text"]=> 
     string(13) "Partly Cloudy" 
    } 
    } 
    [1]=> 
    object(SimpleXMLElement)#9 (1) { 
    ...

DOM ein separates Objekt für die XPath-Ausdrücke verwendet, so dass Sie nur den Namespace für dieses Objekt registrieren müssen:

$document = new DOMDocument(); 
$document->loadXml($result); 
$xpath = new DOMXpath($document); 
$xpath->registerNamespace('yweather', 'http://xml.weather.yahoo.com/ns/rss/1.0'); 

$weather_location = $xpath->evaluate('//yweather:location'); 
...

Quelle

2016-03-31 08:54:59 ThW

Ich habe das versucht, aber ich bekomme 'Warnung: Ungültiges Argument für foreach() in /home/ugbosnia/public_html/blocks/weather/block.php in Zeile 12'' –

zurückzuführen sein kann, zu eine kürzliche Änderung in Yahoo Wetter API, wie hier erwähnt: Making Yahoo Weather API request with OAuth 1

Quelle

2016-04-20 08:03:44 Dom

Antwort

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