Question: How to add custom tags about htmlpurifier-html5

[xemlock]

Hi @dkrnl,
There is no easy way to do it at the moment, unfortunately. That's a feature I totally overlooked. But I should come up with a working solution by the end of this week.

Edit: After some investigation it turned out that I was wrong. You can do it like this:

require './vendor/autoload.php';

$initial = HTMLPurifier_HTML5Config::createDefault();
$config = HTMLPurifier_HTML5Config::create($initial);
$config->set('HTML.DefinitionID', 'CustomHTML5');
$config->set('HTML.DefinitionID', 1);

$def = $config->maybeGetRawHTMLDefinition();
if ($def) {
    $def->addElement('oembed', 'Inline', 'Inline', '', []);
}

$purifier = new HTMLPurifier($config);
echo $purifier->purify('<span><oembed>Foo</oembed></span>');

What is important, is that when you add new element definitions, you must provide a new values for HTML.DefinitionID and HTML.DefinitionRev, unique for a given batch of changes. Or just disable definition cache (probably not a good idea) by calling:

$config->set('Cache.DefinitionImpl', null);

[dkrnl]

@xemlock thank you for reply.

When i try $config->set("Cache.DefinitionImpl", null); my code working well, but have some performance issues, but it is not important... :-)

And one moment:

$def = $config->maybeGetRawHTMLDefinition();
if ($def) {
    $def->addElement('oembed', 'Inline', 'Inline', '', []);
} else {
   // loaded serialized config from cache?
}

[xemlock]

Nope. You don't need the else branch, because $def will be null if the HTML definition used by the config is already set up and loaded from cache.

If you're not using cache you will always enter the if branch.