Question

我正在尝试从Yahoo访问我的网站的天气预报。使用下面的代码我能够打印xml。我现在真正想要实现的是将温度和图像放在两个不同的变量中

 $zipCode = "44418";
 $url = "http://weather.yahooapis.com/forecastrss";
 $zip = "?w=$zipCode";
 $fullUrl = $url . $zip.'&u=c';
 $curlObject = curl_init();
 curl_setopt($curlObject,CURLOPT_URL,$fullUrl);
 curl_setopt($curlObject,CURLOPT_HEADER,false);
 curl_setopt($curlObject,CURLOPT_RETURNTRANSFER,true);
 $returnYahooWeather = curl_exec($curlObject);
 curl_close($curlObject);
 print "yahooWeather". $returnYahooWeather;

//$temperature 
//$image

Answer 1

您应该继续使用simplexml或DOM来解析XML，然后您可以迭代结果。使用SimpleXML，它看起来像这样：

$zipCode = "44418";
$url = "http://weather.yahooapis.com/forecastrss";
$zip = "?w=$zipCode";
$fullUrl = $url . $zip.'&u=c';
$curlObject = curl_init();
curl_setopt($curlObject,CURLOPT_URL,$fullUrl);
curl_setopt($curlObject,CURLOPT_HEADER,false);
curl_setopt($curlObject,CURLOPT_RETURNTRANSFER,true);
$returnYahooWeather = curl_exec($curlObject);
curl_close($curlObject);
//print "here". $returnYahooWeather;

$xmlobj=simplexml_load_string($returnYahooWeather);

$res = $xmlobj->xpath("//yweather:condition");
$tmp = false;
while(list( , $node) = each($res)) {
  $tmp = $node;
 }
$attribs = $tmp->attributes();
print "Temperature [".$attribs['temp']."]";

Answer 2

我发现使用PHP SimpleXML最简单。

$xml = simplexml_load_string($returnYahooWeather);
echo $xml->Path->To->Temperature;

这很容易，你可以使用XPath和SimpleXML :)。还有其他解析XML的方法，如前面提到的DOMDocument就是其中之一。

如何用php解析xml

2 个答案: