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  1. <?
  2.  
  3. $xhtml = '<p style="width: 250px;">This is some text<div class="button">This is the button</div><br><img src="waves.jpg" width="150" height="200" /></p><p><b>Title</b><br>Here is some more text and <a href="#" target="_blank">this is a link</a></p>';
  4.  
  5. $dom = new DOMDocument();
  6. $dom->loadHTML($xhtml);
  7.  
  8. function clean($element, $allowed, $stripped, $prefix = ''){
  9.     if(!is_array($allowed) || ! is_array($stripped)) return;
  10.     if(!$element)return;
  11.     $toDelete = array();
  12.     foreach($element->childNodes as $child){
  13.         if(!isset($child->tagName))continue;
  14.         $n = $child->tagName;
  15.         if ($n && !in_array($n, $allowed) && !in_array($n, $stripped)){
  16.             $toDelete[] = $child;
  17.             continue;
  18.         }
  19.         if($n && in_array($n, $stripped)){
  20.             $attr = array();
  21.             foreach($child->attributes as $a)
  22.                 $attr[] = $a->nodeName;
  23.             foreach($attr as $a)
  24.                 $child->removeAttribute($a);
  25.         }
  26.         clean($child, $allowed, $stripped, $prefix.'  ');
  27.     }
  28.     foreach ($toDelete as $del)
  29.         $element->removeChild($del);
  30. }
  31. $body = $dom->getElementsByTagName('body')->item(0);
  32. clean($body, array('img', 'a'), array('p', 'br', 'b'));
  33. echo preg_replace('#^.*?<body>(.*?)</body>.*$#s', '$1', $dom->saveHTML($body));
Success #stdin #stdout #stderr 0.01s 20520KB
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stdin
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Standard input is empty
stdout
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<p>This is some text</p>
<br><img src="waves.jpg" width="150" height="200"><p><b>Title</b><br>Here is some more text and <a href="#" target="_blank">this is a link</a></p>
stderr
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PHP Warning:  DOMDocument::loadHTML(): Unexpected end tag : p in Entity, line: 1 in /home/xmcpo7/prog.php on line 6
https://ideone.com/aoOOUN
language:
PHP (php 7.3.5)
created:
10 years ago
visibility:
public

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