在 PHP 中解析 Weatherbug 的天气数据

Question

您好，

我正在尝试用 PHP 解析 Weatherbug 的 RSS 提要中的实时天气数据。我之前曾将 simplexml_load_string() 与 NOAA 的天气数据一起使用，但我无法弄清楚如何从 Weatherbug 输出我需要的数据。

这是当前条件的 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>

我最需要的部分是<description>下<item>。任何帮助将不胜感激！

Answer 1

试试这个：

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