phpMyAdmin is a feature-rich tool coded in PHP, that will offer you full control over a MySQL database. You can do practically anything - create fields, rows and tables, remove them or modify their data, export or import a whole database or only a certain part of it, and execute MySQL commands. The tool is very important in case you need to switch web hosting providers, because you can effortlessly generate a full backup of a database in different formats (SQL, CSV, XML). You shall end up with just one file containing the entire content of the database, so you can easily download it from the present provider, upload it to the web server of the new one and import it through the same tool on their end. Your website will look exactly the same, simply because all script applications store their content in a database. With phpMyAdmin you can also easily search and replace content material of your choosing across the entire website - a word, an expression or a link, for instance.