php - remove comments from html source code

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php - remove comments from html source code

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

I know how to get the html source code via cUrl, but I want to remove the comments on the html document (I mean what is between ). In addition, if I can take just the BODY of the html document. thank you.

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1 Answer

深蓝 · Answer 1 · 2021-10-23T21:27:25+0000

Try PHP DOM*:

$html = '<html><body><!--a comment--><div>some content</div></body></html>'; // put your cURL result here

$dom = new DOMDocument;
$dom->loadHtml($html);

$xpath = new DOMXPath($dom);
foreach ($xpath->query('//comment()') as $comment) {
    $comment->parentNode->removeChild($comment);
}

$body = $xpath->query('//body')->item(0);
$newHtml = $body instanceof DOMNode ? $dom->saveXml($body) : 'something failed';

var_dump($newHtml);

Output:

string(36) "<body><div>some content</div></body>"

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