Thread:Project:Support desk/How to Upgrade MediaWiki 1.12 to 1.24/reply (7)

MediaWiki, also newest versions, are compatible with MySQL 5.0. You can upgrade MySQL, but you do not need to upgrade MySQL in order to be able to use MediaWiki 1.24. MediaWiki 1.24 will also work with MySQL 5.0.

The MySQL upgrade would be an additional step - upgrading MediaWiki or PHP will not change the MySQL version.

Yes, first upgrading PHP and then MediaWiki is the correct order. Note that in the time between, after the PHP upgrade and before the MediaWiki upgrade, MediaWiki will most likely not be working correctly. In that time, I would just not use it.