+1 Phing. We use Phing for deploying to production and deploying a staging instance of the app. Phing can checkout from SVN, run a mysqldump to snapshot the DB

+1 Phing. We use Phing for deploying to production and deploying a staging instance of the app. Phing can checkout from SVN, run a mysqldump to snapshot the DB, modify text files (i.e. different .htaccess files for staging/production), run arbitrary shell commands and ping web-APIs for notification etc. Deploys take between 10 and 30 seconds.