Leopard

I've been wanting to upgrade to MySQL 5 for a while now, and after hearing that MySQL 5 is required for Drupal 7 I decided to bump up my upgrade schedule, pronto. If all one wants is MySQL 5 then that is easy enough -- go download MAMP and you're done. But what if you want to be able to dev on MySQL 4 for projects that require it for whatever reason (e.g., clients who are run it and are not willing/able to upgrade MySQL at the moment)?

Well, with not a lot of effort - it very easy to have a PHP 5, PHP 4, MySQL 5, and MySQL 4.1 environment - all sharing the same doc root and servernames (e.g., urls):