How to get element by ID in php DOMDocument class?
I am trying to parse a HTML file using DOMDocument class in PHP.
The sample HTM开发者_如何学PythonL file is<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en">
<head>
<title></title>
</head>
<body>
<p id="myparagraph"></p>
</body>
</html>
and I loaded it using
$document = new DOMDocument();
$document->loadHtmlFile("page.html");
Now I try to get the p element by id this way
print_r($document->getElementById("myparagraph"));
This doesn't work for some reason. So what's wrong with this ?
According to comments in the PHP documentation getElementById doesn't really work that well. What you can do is create your own function similar to this:
function getElementById($id)
{
$xpath = new DOMXPath($this->domDocument);
return $xpath->query("//*[@id='$id']")->item(0);
}
With thanks to paradox_haze who posted the information in the comments on the PHP docs.
加载中,请稍侯......
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