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Asked: 2026-06-06T18:01:14+00:00

I wish to replace all the link urls in some HTML with a number

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I wish to replace all the link urls in some HTML with a number sign (#).

The following basically works, however, it to my dismay inserts a <!DOCTYPE>, <html>, and <body> tag around the modified HTML. Is it possible to keep these tags from being inserted? Is there a better way to do this?

Thank you

$html_with_urls = '<p>hello.  Here is a <a href="http://somesite.com">link</a>.  Goodby</p>';
libxml_use_internal_errors(true); //Temorarily disable errors resulting from improperly formed HTML
$doc = new DOMDocument();
$doc->loadHTML($html_with_urls);
$a = $doc->getElementsByTagName('a');
foreach ($a as $link) {
    if ($link->hasAttribute('href')) {
        $link->setAttribute('href', '#');
    }
}
$html_without_urls = $doc->saveHTML();
libxml_use_internal_errors(false);
echo($html_with_urls . '<br />' . $html_without_urls);
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1 Answer

  1. Editorial Team

    In my opinion, DOMDocument class has got no option to keep it from adding those extra stuffs. It returns a complete and a valid HTML.

    For your particular case, you could strip those contents off the document yourself:
    [From the code you could tell when it wont work :)]

    $html_without_urls = str_replace(array('<html>', '</html>', '<body>', '</body>'), array('', '', '', ''), $html_without_urls);
$html_without_urls = preg_replace('/^<!DOCTYPE.+?>/i', '', $html_without_urls);
echo $html_without_urls;

    Or if you could do with some 3rd party libraries, you could use SmartDOMDocumet. Just call the function saveHTMLExact() instead.

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