HTML5 Definitions for HTML Purifier

This library provides HTML5 element definitions for HTML Purifier.

It is the most complete HTML5-compliant solution among all based on HTML Purifier. Apart from providing the most extensive set of element definitions, it provides tidy/sanitization rules for transforming the input into a valid HTML5 output.

Installation

Install with Composer by running the following command:

composer require xemlock/htmlpurifier-html5

Usage

The most basic usage is similar to the original HTML Purifier. Create a HTML5-compatible config using HTMLPurifier_HTML5Config::createDefault() factory method, and then pass it to an HTMLPurifier instance:

$config = HTMLPurifier_HTML5Config::createDefault();
$purifier = new HTMLPurifier($config);
$clean_html5 = $purifier->purify($dirty_html5);

To modify the config you can either instantiate the config with a configuration array passed to HTMLPurifier_HTML5Config::create(), or by calling set method on an already existing config instance.

For example, to allow IFRAMEs with Youtube videos you can do the following:

$config = HTMLPurifier_HTML5Config::create(array(
  'HTML.SafeIframe' => true,
  'URI.SafeIframeRegexp' => '%^//www\.youtube\.com/embed/%',
));

or equivalently:

$config = HTMLPurifier_HTML5Config::createDefault();
$config->set('HTML.SafeIframe', true);
$config->set('URI.SafeIframeRegexp', '%^//www\.youtube\.com/embed/%');

Configuration

Apart from HTML Purifier's built-in configuration directives, the following new directives are also supported:

• HTML.IframeAllowFullscreen

  Version added: 0.1.11
  Type: Boolean
  Default: false

  Whether or not to permit allowfullscreen attribute on iframe tags. It requires either %HTML.SafeIframe or %HTML.Trusted to be true.

Supported HTML5 elements

Aside from HTML elements supported originally by HTML Purifier, this library adds support for the following HTML5 elements:

<article>, <aside>, <audio>, <bdi>, <details>, <dialog>, <figcaption>, <figure>, <footer>, <header>, <hgroup>, <main>, <mark>, <nav>, <picture>, <progress>, <section>, <source>, <summary>, <time>, <track>, <video>, <wbr>

as well as HTML5 attributes added to existing HTML elements, such as:

<a>, <del>, <fieldset>, <ins>, <script>

License

The MIT License (MIT). See the LICENSE file.