在PHP中解析Weatherbug的天气数据

Question

Greetings，

我试图从Weatherbug的RSS源中解析实时天气数据。我之前曾使用simplexml_load_string（）与NOAA的天气数据，但我无法弄清楚如何输出我需要从Weatherbug获得的数据。

这里是当前条件XML：

<rss version="2.0" xmlns:georss="http://www.georss.org/georss"> 
<channel> 

     <title>Observations from Saint Inigoes, MD - USA</title> 


    <link>http://weather.weatherbug.com/MD/Saint Inigoes-weather.html?ZCode=Z5546&amp;Units=0&amp;stat=KNUI</link> 
    <description>Weatherbug, the owner of the world's largest weather network is now providing an API to it's weather data in the form of RSS. This will enable it's enthusiastic users to build their own applications.</description> 
    <language>en-us</language> 

    <lastBuildDate>Tue, 07 Dec 2010 16:00:00 GMT</lastBuildDate> 
    <ttl>60</ttl> 
    <aws:weather xmlns:aws="http://www.aws.com/aws"><aws:api version="2.0" /><aws:WebURL>http://weather.weatherbug.com/MD/Saint Inigoes-weather.html?ZCode=Z5546&amp;Units=0&amp;stat=KNUI</aws:WebURL><aws:InputLocationURL>http://weather.weatherbug.com/VA/Heathsville-weather.html?ZCode=Z5546&amp;Units=0</aws:InputLocationURL><aws:station requestedID="" id="KNUI" name="Webster Field, Naval Electronic Syste" city="Saint Inigoes" state=" MD" zipcode="20684" country="USA" latitude="38.1488876342773" longitude="-76.4197235107422" /><aws:current-condition icon="http://deskwx.weatherbug.com/images/Forecast/icons/cond007.gif">Sunny</aws:current-condition><aws:temp units="&amp;deg;F">33.1</aws:temp><aws:rain-today units="&quot;">0</aws:rain-today><aws:wind-speed units="mph">14</aws:wind-speed><aws:wind-direction>WNW</aws:wind-direction><aws:gust-speed units="mph">28</aws:gust-speed><aws:gust-direction>WNW</aws:gust-direction></aws:weather> 

    <image> 
    <title>Local Weather from WeatherBug</title> 
    <width>142</width> 
    <height>18</height> 
    <link>http://weather.weatherbug.com/MD/Saint Inigoes-weather.html?ZCode=Z5546&amp;Units=0&amp;stat=KNUI</link> 
    <url>http://www.weatherbug.com/aws/imagesHmPg0604/img_wxbug_logo_whiteBG.gif</url> 

    </image> 

      <item> 

         <title>Live Conditions from Saint Inigoes, MD - USA</title>       

        <link>http://weather.weatherbug.com/MD/Saint Inigoes-weather.html?ZCode=Z5546&amp;Units=0&amp;stat=KNUI</link> 

        <pubDate>Tue, 07 Dec 2010 14:53:00 GMT</pubDate> 
        <description><![CDATA[ 

          <img src="http://deskwx.weatherbug.com/images/Forecast/icons/cond007.gif" border="0" alt="Current Conditions"/>&nbsp;&nbsp;&nbsp; 
        <b>Sunny</b> <br /> 

       <b>Temperature:</b> 33.1 &deg;F&nbsp;&nbsp; 
       <br /> 
       <b>Wind Speed:</b> 14 mph WNW&nbsp;&nbsp; 
      <br /> 
       <b>Gusts:</b> 28 mph WNW &nbsp;&nbsp; 
       <b>Rain Today:</b> 0 &quot; &nbsp;&nbsp; 
       <br /> 
        ]]></description> 
         <georss:point>38.1488876342773 -76.4197235107422</georss:point> 

         <guid isPermaLink="false">Tue, 07 Dec 2010 16:00:36 GMT-Station1</guid> 


       </item> 

</channel> 
    </rss> 

，我最需要的是<item>下<description>的一部分。任何帮助将不胜感激！

Answer 1

试试这个：

$description = (string)$simpleXml->channel->item->description;