Question

使用这样的XML Feed：

<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在PHP中解析它？

$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为此，你只需要记住用于传输天气数据的自定义命名空间，这里是一个小例子（没有错误处理等），我我们只是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

查看DOMDocument::getElementByTagNameNS，您可能还希望DOMNode::lookupNamespaceURI使用前缀（例如w）而不是名称空间URI（例如http://rss.weather.com.au/w.dtd）。

XML RSS Feed解析PHP

2 个答案: