PhpMyAdmin is great for what it does but it does not excel everywhere. If you’re looking to create instant or automated backups of MySQL databases consider Sypex Dumper 2.x
Built with PHP, it has an Ajaxed interface and can run database restores as well. Handily it can avoid PHP script timeouts by pausing the jobs. And being licensed under the BSD license, it is absolutely free. Interestingly supposedly it can also be integrated into third-party products… Something I have not done or tried. What impressed me mostly about it was how easy interacting with databases via the browser became with it.