使用 simpleXML 解析 foursquare KML 场地提要

Question

我正在尝试使用 simpleXML 解析来自 foursqare 的 KML 场地提要，但我无法获取嵌套在描述中的场地 url。看起来 simpleXML 剥离了它。

详细信息：

foursqare kml feed 看起来像这样：

<kml>
 <Folder>
    <name>foursquare checkin history for X</name>
    <description>foursquare checkin history for X</description>
    <Placemark>
       <name>somevenuename</name>
       <description>@<a href="/v/somevenueurl">somevenuename</a>- a foursqareshout!</description>
       <updated>Wed, 02 Nov 11 17:00:05 +0000</updated>
       <published>Wed, 02 Nov 11 17:00:05 +0000</published>
       <visibility>1</visibility>
       <Point>
         <extrude>1</extrude>
         <altitudeMode>relativeToGround</altitudeMode> 
         <coordinates>xx.xxxxxx,yy.yyyyyy</coordinates>
       </Point>
    </Placemark>
    etc ...  

我对 simpleXMl 的调用是......嗯，简单：
$venue_items = simplexml_load_file($venue_kml_file);
有什么想法谁可以在 description 中保留 html 吗？

Answer 1

他们是对的。这是无效的 XML。不过，我使用正则表达式为您编写了一个解决方法。这可能有点hacky，但你只能用你所得到的来偿还，所以这里是：

$xml_string = <<<XML_STRING
<kml>
 <Folder>
    <name>foursquare checkin history for X</name>
    <description>foursquare checkin history for X</description>
    <Placemark>
       <name>somevenuename</name>
       <description>@<a href="/v/somevenueurl">somevenuename</a>- a foursqareshout!</description>
       <updated>Wed, 02 Nov 11 17:00:05 +0000</updated>
       <published>Wed, 02 Nov 11 17:00:05 +0000</published>
       <visibility>1</visibility>
       <Point>
         <extrude>1</extrude>
         <altitudeMode>relativeToGround</altitudeMode> 
         <coordinates>xx.xxxxxx,yy.yyyyyy</coordinates>
       </Point>
    </Placemark>
 </Folder>
 <Folder>
    <name>foursquare checkin history for X</name>
    <description>foursquare checkin history for X</description>
    <Placemark>
       <name>somevenuename</name>
       <description>@<a href="/v/somevenueurl222">somevenuename</a>- a foursqareshout!</description>
       <updated>Wed, 02 Nov 11 17:00:05 +0000</updated>
       <published>Wed, 02 Nov 11 17:00:05 +0000</published>
       <visibility>1</visibility>
       <Point>
         <extrude>1</extrude>
         <altitudeMode>relativeToGround</altitudeMode> 
         <coordinates>xx.xxxxxx,yy.yyyyyy</coordinates>
       </Point>
    </Placemark>
 </Folder>
</kml>    

XML_STRING;


preg_match_all( '%<Placemark>(.*?)</Placemark>%s', $xml_string, $placemarks, PREG_SET_ORDER );
for( $x = 0; $x < sizeof($placemarks); $x++ ){
    preg_match_all('%<description>(.*?)</description>%s', $placemarks[$x][1], $descriptions, PREG_SET_ORDER );
    for( $y = 0; $y < sizeof($descriptions); $y++ ){
        echo $descriptions[$y][1];
    }
}

希望有帮助......