Question

是的，所以这是我使用XML的第一天。我不是在创建XML，有人给我发了一个URL，我需要用PHP做一些事情。这就是XML结构的样子：

<response>
<query id="1">
<results>
    <item>
        <id>GZ7w39jpqwo</id>
        <rank>1</rank>
        <explanation>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nulla a massa lectus, sed convallis sapien. Curabitur sem mauris, ullamcorper ut. </explanation>
    </item>
    <item>
        <id>hfMNRUAwLVM</id>
        <rank>2</rank>
        <explanation>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nulla a massa lectus, sed convallis sapien. Curabitur sem mauris, ullamcorper ut. </explanation>
    </item>
    <item>
        <id>I_cxElavpS8</id>
        <rank>3</rank>
        <explanation>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nulla a massa lectus, sed convallis sapien. Curabitur sem mauris, ullamcorper ut. </explanation>
    </item>
</results>
</query>
</response>

所以，是的，这是我到目前为止已经想到的......

$url = "http://www.MyURL.blah";

$string = file_get_contents($url);

$xml = simplexml_load_string($string);

echo $xml->getName();

这与'回应'这个词相呼应。好的，去吧！那么现在你怎么得到每个项目的id，等级和解释？我上面只发了3件。实际上大约有50个。

Answer 1

试用本教程：

http://www.phpro.org/tutorials/Introduction-To-SimpleXML-With-PHP.html

Answer 2

foreach($xml->xpath('/results')->children() as $child)
{
   $mystuff = $child->getChildren();
   $id = $mystuff[0];
   $rank = $mystuff[1];
   $explanation = $mystuff[2];
}

这样的事情。请参阅SimpleXMLElement object

的PHP文档

Answer 3

这个例子可以帮助你，它使用DOMDocument。

$document = new DOMDocument(); //Creates a new DOM Document (used to process XML)
$document->loadXML($fileContents); //Load the XML file from an string
$resultsNode = $document->getElementsByTagName("results")->item(0); //Get the node with the results tag
foreach($resultsNode->childNodes as $itemNode) //Get each child node (item) and process it
{
    foreach($itemNode->childNodes as $unknownNode) //Get each child node of item and process it
    {
        if($unknownNode->nodeName == "id") //Check if it's the dessired node
        {
            $this->id = $unknownNode->value; //Assign the value of the node to a variable
        }
        if($unknownNode->nodeName == "rank")
        {
            $this->rank = $unknownNode->value;
        }
        if($unknownNode->nodeName == "explanation")
        {
            $this->explanation = $unknownNode->value;
        }
    }
}

从XML访问数据

3 个答案: