league/commonmark
Highly extensible PHP Markdown parser supporting full CommonMark and GitHub-Flavored Markdown. Convert Markdown to HTML with simple converters, customize rendering via extensions, and run safely with options like stripping HTML and blocking unsafe links.
layout: default title: GitHub-Flavored Markdown description: The GithubFlavoredMarkdownExtension class includes all the GFM addons redirect_from:
You can manually add the GFM extension to your environment like this:
use League\CommonMark\Environment\Environment;
use League\CommonMark\Extension\CommonMark\CommonMarkCoreExtension;
use League\CommonMark\Extension\GithubFlavoredMarkdownExtension;
use League\CommonMark\MarkdownConverter;
// Define your configuration, if needed
$config = [];
// Configure the Environment with all the CommonMark and GFM parsers/renderers
$environment = new Environment($config);
$environment->addExtension(new CommonMarkCoreExtension());
$environment->addExtension(new GithubFlavoredMarkdownExtension());
$converter = new MarkdownConverter($environment);
echo $converter->convert('Hello GFM!');
This will automatically include all of these sub-extensions/features for you:
Or, if you only want a subset of GFM extensions, you can add them individually like this instead:
use League\CommonMark\Environment\Environment;
use League\CommonMark\Extension\Autolink\AutolinkExtension;
use League\CommonMark\Extension\CommonMark\CommonMarkCoreExtension;
use League\CommonMark\Extension\DisallowedRawHtml\DisallowedRawHtmlExtension;
use League\CommonMark\Extension\Strikethrough\StrikethroughExtension;
use League\CommonMark\Extension\Table\TableExtension;
use League\CommonMark\Extension\TaskList\TaskListExtension;
use League\CommonMark\MarkdownConverter;
// Define your configuration, if needed
$config = [];
// Configure the Environment with all the CommonMark parsers/renderers
$environment = new Environment($config);
$environment->addExtension(new CommonMarkCoreExtension());
// Remove any of the lines below if you don't want a particular feature
$environment->addExtension(new AutolinkExtension());
$environment->addExtension(new DisallowedRawHtmlExtension());
$environment->addExtension(new StrikethroughExtension());
$environment->addExtension(new TableExtension());
$environment->addExtension(new TaskListExtension());
$converter = new MarkdownConverter($environment);
echo $converter->convert('Hello GFM!');
This extension relies on the CommonMarkCoreExtension being enabled, so don't forget to include that too.
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