After 5 years of development, 3,000,000 downloads, and 58 releases, I'm extremely pleased to announce that league/commonmark version 1.0.0 has been released!
Markdown
Markdown is one of the most popular markup languages on the web. Unfortunately, with no standard specification, every implementation works differently, producing varying results across different platforms. The CommonMark specification fixes this by providing an unambiguous syntax specification and a comprehensive suite of tests. In this session you'll learn about this standard and how to integrate the league/commonmark parser into their PHP applications. We'll also cover how to customize the library to implement new features like custom Markdown syntax or advanced renderers.
Markdown is one of the most popular markup languages on the Web. Unfortunately, with no standard specification, every implementation works differently, producing varying results across different platforms. The CommonMark specification fixes this by providing an unambiguous syntax specification and a comprehensive suite of tests. Attendees will learn about this standard and how to integrate the league/commonmark parser into their applications. We will also cover how to add new syntax and other features to the parser to fit your custom needs.
Markdown is one of the most popular markup languages on the Web. Unfortunately, with no standard specification, every implementation works differently, producing varying results across different platforms. The CommonMark specification fixes this by providing an unambiguous syntax specification and a comprehensive suite of tests. Attendees will learn about this standard and how to integrate the league/commonmark parser into their applications. We will also cover how to add new custom features.
league/commonmark is a well-written, super-configurable Markdown parser for PHP based on the CommonMark spec. In this lightning talk, we’ll introduce the CommonMark spec, discuss why it’s important, and demonstrate how the league/commonmark project can be used and extended for your own PHP projects.
Learn about the CommonMark initiative and how you can implement a CommonMark parser into your PHP projects.

Open-source PHP Markdown parser compatible with the CommonMark spec.