获取href的Xpath表达式。 不只是锚文本

Question

Playing around with xpath expressions trying to learn it. I found a code snippet, and adjusted it a little. What I'm trying to do is get every link on a page.

$baseurl = "http://www.example.com";
$html = file_get_contents($baseurl);

$dom = new DOMDocument();
@$dom->loadHTML($html);
$xpath = new DOMXPath($dom);


$ahrefs = $xpath->query('//a');

foreach ($ahrefs as $ahref) { 
    echo $ahref->childNodes->item(0)->nodeValue . "<br />";
}

But now I'm grabbing the anchor text. I want the href part. Maybe even both. What am I doing wrong?

Answer 1

要获取href，您必须访问节点的attributes属性

echo $ahref->attributes->getNamedItem("href")->nodeValue . "<br />";

Answer 2

Use :

//a/@href

No additional code (except for the evaluation of this expression) is necessary.

Answer 3

echo $ahref->getAttribute('href') . "<br />";