How can I remove attributes from an html tag?

Question

How can I use php to strip all/any attributes from a tag, say a paragraph tag?

to

Answer 1

I honestly think that the only sane way to do this is to use a tag and attribute whitelist with the HTML Purifier library. Example script here:

set('HTML.Allowed', 'p,b,a[href],i,br,img[src]');
$config->set('URI.Base', 'http://www.example.com');
$config->set('URI.MakeAbsolute', true);

$purifier = new HTMLPurifier($config);

$dirty_html = "
  broken a href linky
  c

  

  Anzahl besuchter Seiten
  
  missing end tag
 ende 
";

$clean_html = $purifier->purify($dirty_html);

print "
dirty
";
print "
" . htmlentities($dirty_html) . "
";

print "
clean
";
print "
" . htmlentities($clean_html) . "
";

?>

This yields the following clean, standards-conforming HTML fragment:

broken a href linkfnord

y
c
Anzahl besuchter Seiten
missing end tag
ende 

In your case the whitelist would be:

$config->set('HTML.Allowed', 'p');