I’ve successfully followed the instructions for PHP-Markdown Extra at the URL given. Worked in minutes.
Makimaki: you are correct in your assumption that the existing HTML would interfere. Markdown cannot be placed within block-level HTML tags. So if you have HTML on the page and Markdown within it then the Markdown will not be processed. If you have HTML on the page it’s possible the visual editor left a trailing opening block tag and the Markdown is being wrapped inside that.
Markdown-extra can be placed inside HTML lock tags – have a look at this page for more information. https://michelf.com/projects/php-markdown/extra/#markdown-attr
hope this helps
