使用cURL和simpleXMLElement提取数据。如何获取XPATH后的XML元素的值？ [英] Using cURL and simpleXMLElement to extract data. How do I get the value of the XML element after XPATH?

问题描述

我有一些问题从SimpleXMLElement对象提取我想要的数据。这里是我使用的代码的基础：

I am having some problems extracting the data I want from a SimpleXMLElement object. Here is the basics of the code I am using:

curl_setopt( $ch, CURLOPT_URL, $URL );
$html = curl_exec( $ch );
$html = $tidy->parseString( $html, $tc, 'utf8' );
$tidy->cleanRepair();
$html = $tidy->body()->value;
$xml = new SimpleXMLElement( $html );

$xml = $xml->xpath( "//ul[@id='wxoptions']/li[3]/a" ); //Your XPATH

print_r( $xml );

这将导航到所需的正确HTML元素，但会打印：

This navigates to the correct HTML element I want, but prints:

Array
(
    [0] => SimpleXMLElement Object
        (
            [@attributes] => Array
                (
                    [href] => http://www.mylink.com
                    [title] => mylink
                )

            [0] => mylink
        )

)

值，我需要的是数组中的[href]， http://www.mylink.com 。如何从我包括的输出中提取？

The value I need is the [href], "http://www.mylink.com" in that array. How do I extract that from the output I included? I'm stumped and very new to SimpleXMLElement and Xpath.

推荐答案

使用iterate和属性

Use iterate, and attributes

foreach ( $xml->xpath( "//ul[@id='wxoptions']/li[3]/a" ) as $node)
{
  $href = $node->attributes("href");
}

或直接致电：

$href = $xml[0]->attributes("href");

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