I am trying to use HTMLPurifier to transform HTML by adding class attributes to paragraphs.
For example, for this input HTML:
<p>This is a paragraph</p>
<p>Another one</p>
This would be the output:
<p class="myclass">This is a paragraph</p>
<p class="myclass">Another one</p>
I read the doc and some forum post on that site but i could not figure it out how exactly I should do it?
Thanks in advance.
Here is a quick and dirty example that you can test on your own:
<?php
require_once 'lib/library/HTMLPurifier.auto.php';
class HTMLPurifier_AttrTransform_AnchorClass extends HTMLPurifier_AttrTransform
{
public function transform($attr, $config, $context)
{
// keep predefined class
if (isset($attr['class']))
{
$attr['class'] .= ' myclass';
}
else
{
$attr['class'] = 'myclass';
}
return $attr;
}
}
$dirty_html = '<a href=""></a>
<a target="_blank" href=""></a>
<a href="" class="toto"></a>
<a href="" style="oops"></a>';
$config = HTMLPurifier_Config::createDefault();
$htmlDef = $config->getHTMLDefinition(true);
$anchor = $htmlDef->addBlankElement('a');
$anchor->attr_transform_post[] = new HTMLPurifier_AttrTransform_AnchorClass();
$purifier = new HTMLPurifier($config);
$clean_html = $purifier->purify($dirty_html);
var_dump($clean_html);
It outputs:
string '<a href="" class="myclass"></a>
<a href="" class="myclass"></a>
<a href="" class="toto myclass"></a>
<a href="" class="myclass"></a>' (length=135)
