XML RSS订阅解析PHP

Question

，象这样的XML饲料：

<w:current temperature="22.2" dewPoint="12.9" humidity="56" windSpeed="5.6" windGusts="9.3" windDirection="ESE" pressure="1017.8" rain="0.0" />

和

<w:forecast day="Thursday" description="Mostly Sunny. Warm." min="17" max="29" icon="2" iconUri="http://www.weather.com.au/images/icons/2.gif" iconAlt="Mostly Sunny" />

如何使用DOM我解析它在PHP？

$doc = new DOMDocument(); 
$doc->load('http://rss.weather.com.au/sa/adelaide'); 
$arrFeeds = array(); 
foreach ($doc->getElementsByTagName('item') as $node) { 
    $itemRSS = array ( 
     'title' => $node->getElementsByTagName('title')->item(0)->nodeValue, 
     'description' => $node->getElementsByTagName('w')->item(0)->nodeValue, 
     ); 
    array_push($arrFeeds, $itemRSS); 
} 

返回错误：Notice: Trying to get property of non-object in /var/www/index.php on line 123

Answer 1

我个人使用SimpleXML对于这一点，你就必须牢记正在使用携带气象数据的自定义空间，这里有一个小例子（带没有错误处理等），我刚刚测试并获取当前的天气。

//Fetch the feed 
$feed = file_get_contents("http://rss.weather.com.au/sa/adelaide"); 
//Load it into simplexml 
$weather = simplexml_load_string($feed); 
//Get namespace descendants using the w namespace defined in the feed 
$channelelements = $weather->channel->item->children("http://rss.weather.com.au/w.dtd"); 
//Looping through each of the attributes and echoing them, you can do what you want with them at this point 
foreach($channelelements->attributes() as $k => $attr) { 
    echo $k.' = '.$attr.'<br />'; 
} 

Answer 2

查找到DOMDocument::getElementByTagNameNS，你可能也需要DOMNode::lookupNamespaceURI的前缀（如w），而不是命名空间URI（例如http://rss.weather.com.au/w.dtd）工作。