league/commonmark 2.2.2

League/commonmark is a highly extensible PHP Markdown parser. It fully supports the CommonMark specification and GitHub-Flavored Markdown. This makes it an ideal choice when you need to convert CommonMark or GitHub-Flavored Markdown into HTML. The package was created by Colin O'Dell and based on the CommonMark JS reference implementation by John MacFarlane.

To use league/commonmark in your PHP project, you first need to install it via Composer. Run the following command in your terminal:

$ composer require league/commonmark

After that, you can utilize the CommonMarkConverter or GithubFlavoredMarkdownConverter classes to convert your markdown text into HTML. Below is sample usage of the CommonMarkConverter:

use League\CommonMark\CommonMarkConverter;

$converter = new CommonMarkConverter([
    'html_input' => 'strip',
    'allow_unsafe_links' => false,
]);

echo $converter->convert('# Hello World!');

// <h1>Hello World!</h1>

If instead you want GitHub-Flavored Markdown, you can use the GithubFlavoredMarkdownConverter class:

use League\CommonMark\GithubFlavoredMarkdownConverter;

$converter = new GithubFlavoredMarkdownConverter([
    'html_input' => 'strip',
    'allow_unsafe_links' => false,
]);

echo $converter->convert('# Hello World!');

// <h1>Hello World!</h1>

Make sure to only use UTF-8 and ASCII encodings with these converters. If you're parsing untrusted input, consider setting the html_input and allow_unsafe_links options for additional security.

Full documentation for league/commonmark, including advanced usage, configuration, and customization information, can be found at https://commonmark.thephpleague.com. This comprehensive resource provides everything you need to unlock the full potential of the league/commonmark package.