Hi,
I have 5 years experience working with Linux, Apache, MySQL, and PHP. My Resume is available on my profile as well as reviews from past clients. I can write you a script to backup and restore your database using php. If you want like an admin backend that lets you backup the database, and maybe select a backup to restore, I can do that for you. If you want your database automatically backed up on a regular basis (maybe once a day), I can do that too.
Let me know if there's anything else you want me to provide, including examples of past work, or if you have any questions. Let's discuss more about this project. I look forward to working with you and thank you for taking the time to consider my bid.