使用简单XML处理XML Feed

Question

我正在使用英国Met Office api来使用一些天气信息。 XML是奠定了为以下几点：

<SiteRep> 
    <Wx> 
    <Param name="F" units="C">Feels Like Temperature</Param> 
    <Param name="G" units="mph">Wind Gust</Param> 
    <Param name="H" units="%">Screen Relative Humidity</Param> 
    <Param name="T" units="C">Temperature</Param> 
    <Param name="V" units="">Visibility</Param> 
    <Param name="D" units="compass">Wind Direction</Param> 
    <Param name="S" units="mph">Wind Speed</Param> 
    <Param name="U" units="">Max UV Index</Param> 
    <Param name="W" units="">Weather Type</Param> 
    <Param name="Pp" units="%">Precipitation Probability</Param> 
    </Wx> 
<DV dataDate="2013-08-28T08:00:00Z" type="Forecast"> 
<Location i="22" lat="53.5797" lon="-0.3472" name="HUMBERSIDE AIRPORT" country="ENGLAND" continent="EUROPE"> 
    <Period type="Day" value="2013-08-28Z"> 
    <Rep D="SSW" F="19" G="9" H="59" Pp="0" S="4" T="20" V="VG" W="3" U="3">720</Rep> 
    </Period> 
</Location> 
<Location i="25" lat="53.8658" lon="-1.6606" name="LEEDS BRADFORD INTERNATIONAL AIRPORT" country="ENGLAND" continent="EUROPE"> 
    <Period type="Day" value="2013-08-28Z"> 
    <Rep D="SW" F="17" G="11" H="72" Pp="7" S="7" T="18" V="GO" W="7" U="3">720</Rep> 
    </Period> 
</Location> 
</DV> 
</SiteRep> 

如果我使用使用simplexml_load_file和print_r的加载这个XML饲料我得到以下输出：

[Wx] => SimpleXMLElement Object 
    (
     [Param] => Array 
      (
       [0] => Feels Like Temperature 
       [1] => Wind Gust 
       [2] => Screen Relative Humidity 
       [3] => Temperature 
       [4] => Visibility 
       [5] => Wind Direction 
       [6] => Wind Speed 
       [7] => Max UV Index 
       [8] => Weather Type 
       [9] => Precipitation Probability 
      ) 

    ) 

[DV] => SimpleXMLElement Object 
    (
     [@attributes] => Array 
      (
       [dataDate] => 2013-08-28T08:00:00Z 
       [type] => Forecast 
      ) 

     [Location] => Array 
      (
       [0] => SimpleXMLElement Object 
        (
         [@attributes] => Array 
          (
           [i] => 22 
           [lat] => 53.5797 
           [lon] => -0.3472 
           [name] => HUMBERSIDE AIRPORT 
           [country] => ENGLAND 
           [continent] => EUROPE 
          ) 

         [Period] => SimpleXMLElement Object 
          (
           [@attributes] => Array 
            (
             [type] => Day 
             [value] => 2013-08-28Z 
            ) 

           [Rep] => 720 
          ) 

        ) 

       [1] => SimpleXMLElement Object 
        (
         [@attributes] => Array 
          (
           [i] => 25 
           [lat] => 53.8658 
           [lon] => -1.6606 
           [name] => LEEDS BRADFORD INTERNATIONAL AIRPORT 
           [country] => ENGLAND 
           [continent] => EUROPE 
          ) 

         [Period] => SimpleXMLElement Object 
          (
           [@attributes] => Array 
            (
             [type] => Day 
             [value] => 2013-08-28Z 
            ) 

           [Rep] => 720 
          ) 

        ) 

我的问题是至关重要的数据我想是内众议员但我似乎无法处理它使用simplexml时？我应该以另一种方式来做这件事吗？

Answer 1

试试这一个越来越Rep

$xml = simplexml_load_file('file.xml'); 

foreach($xml->DV->Location as $location) 
{ 
    $att = $location->Period->Rep->attributes(); 

    echo $att['D']; 
    echo $att['F']; 
    echo $att['G']; 
    echo $att['H']; 

    etc... 
} 

Answer 2

纠正你的XML后，我会建议使用DOMDocument和DOMXPath这样的：

<?php 

$xml = <<<EOF 
<SiteRep> 
    <Wx> 
     <Param name="F" units="C">Feels Like Temperature</Param> 
     <Param name="G" units="mph">Wind Gust</Param> 
     <Param name="H" units="%">Screen Relative Humidity</Param> 
     <Param name="T" units="C">Temperature</Param> 
     <Param name="V" units="">Visibility</Param> 
     <Param name="D" units="compass">Wind Direction</Param> 
     <Param name="S" units="mph">Wind Speed</Param> 
     <Param name="U" units="">Max UV Index</Param> 
     <Param name="W" units="">Weather Type</Param> 
     <Param name="Pp" units="%">Precipitation Probability</Param> 
    </Wx> 
    <DV dataDate="2013-08-28T08:00:00Z" type="Forecast"> 
     <Location i="22" lat="53.5797" lon="-0.3472" name="HUMBERSIDE AIRPORT" country="ENGLAND" continent="EUROPE"> 
      <Period type="Day" value="2013-08-28Z"> 
       <Rep D="SSW" F="19" G="9" H="59" Pp="0" S="4" T="20" V="VG" W="3" U="3">720</Rep> 
      </Period> 
     </Location> 
     <Location i="25" lat="53.8658" lon="-1.6606" name="LEEDS BRADFORD INTERNATIONAL AIRPORT" country="ENGLAND" continent="EUROPE"> 
      <Period type="Day" value="2013-08-28Z"> 
       <Rep D="SW" F="17" G="11" H="72" Pp="7" S="7" T="18" V="GO" W="7" U="3">720</Rep> 
      </Period> 
     </Location> 
    </DV> 
</SiteRep> 
EOF; 

$doc = new DOMDocument(); 
$doc->loadXML($xml); 
$xpath = new DOMXPath($doc); 

$query = '//SiteRep/DV/Location/Period/Rep'; 

$entries = $xpath->query($query); 

foreach ($entries as $entry) { 
    var_dump($entry->nodeValue); 
} 

如果你需要的属性看看DOMNode