This is a quick survival guide to Moodle principal versions and requirements.
This gist is no longer maintained. I leave it here partly for historical reasons. Currently, Moodle documentation for different versions has improved significantly, and it is more detailed and easier to identify things like specific upgrade paths.
In general, you can find the main information about Moodle versions at the following links:
- 😎 Current Moodle version, download from: https://download.moodle.org/releases/latest/
- 🎒 Other supported releases, download from: https://download.moodle.org/releases/supported/
- 🚑 Security-only-supported releases, download from: https://download.moodle.org/releases/security/
- 🍂 Legacy releases - no longer supported, download from: https://download.moodle.org/releases/legacy/
- 📆 Releases calendar: https://moodledev.io/general/releases
http://www.syndrega.ch/blog/#php-and-dbms-compatibility-of-major-moodle-releases