'PHP remove element contain specific class

I need help using preg_replace

First, I want to remove the anchor element and leave only the text. I use this regex : '#<a .*?>|#' and it seems to work.

then I want to remove an element that contains a certain class and I haven't found the right regex for it. I tried using this : '#<td class="*remove-this.*td>?#ms' but still failed

this is the code:

function prp($str)
{
    $anchor = '#<a .*?>|</a>#';
    $remove = '#<td class="*remove-this.*td>?#ms';
    $str = preg_replace($anchor, '', $str);
    $str = preg_replace($remove, '', $str);
    return $str;
}

$tags = '<td class="hello there">
            <a href="#" class="hy">Thank you</a>
        </td>
        <td class="hello there remove-this">
            <a href="#" class="hy yuhu">Yuhuuu</a>
        </td>';

print_r( prp($tag) );

The output i want is:

<td class="hello there">
Thank you
</td>

how to get it?

phpregex


Solution 1:[1]

function prp(string $html, array $classesToRemove): string {

  $doc = new DOMDocument();
  $doc->loadHTML($html);

  $htmlNode = $doc->childNodes[1];
  $bodyNode = $htmlNode->childNodes[0];

  foreach ($bodyNode->childNodes as $node) {
    if (( $node->nodeType === XML_ELEMENT_NODE ) && $node->tagName === 'td') {
      foreach ($node->attributes as $attribute) {
        if ($attribute->nodeName === 'class' && in_array($attribute->nodeValue, $classesToRemove)) {
          $bodyNode->removeChild($node);
        }
      }
    }

  }

  return str_replace([ '<body>', '</body>' ], '', $doc->saveHTML($bodyNode));

}

$tags = '
<td class="hello there">
<a href="#" class="hy">Thank you</a>
</td>
<td class="hello there remove-this">
<a href="#" class="hy yuhu">Yuhuuu</a>
</td>
';

print_r(prp($tags, [ 'hello there remove-this' ]));

Solution 2:[2]

@lukas.j got me excited again and I'm trying to find information about PHP DOM

and this is the solution as expected

function prp($str)
{
    $str = "<tr>{$str}</tr>";

    $anchor = '#<a .*?>|</a>#';
    $str = preg_replace($anchor, '', $str);

    $doc = new DOMDocument;
    @$doc->loadHTML($str);
    $xpath = new DOMXPath($doc);
    $el = $xpath->query("//td[contains(@class, 'remove-this')]");
    if($el){
        $el = $el[0];
        $rel = $el->ownerDocument->saveXML($el);
        $str = str_replace($rel, '' , $str);
    }
    $tr = '#<tr.*?>|</tr>#';
    $str = preg_replace($tr, '', $str);

    return $str;
}

$tag = '<td class="hello there">
            <a href="#" class="hy">Thank you</a>
        </td>
        <td class="hello there remove-this">
            <a href="#" class="hy yuhu">Yuhuuu</a>
        </td>';

print_r( prp($tag) );

Sources

This article follows the attribution requirements of Stack Overflow and is licensed under CC BY-SA 3.0.

Source: Stack Overflow

Solution Source
Solution 1 lukas.j
Solution 2 E_net4 - Mr Downvoter

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