phpMyAdmin is a feature-rich tool developed in PHP, which shall give you complete control over a MySQL database. You could do literally anything - create fields, rows and tables, remove them or alter their content, export or import a whole database or only a specific part of it, and execute MySQL commands. The tool is necessary if you would like to switch hosting providers, due to the fact that you may easily create a full backup of a database in several formats (SQL, CSV, XML). You shall end up with a single file which contains the whole content of the database, so you can easily download it from the current provider, upload it to the web server of the new one and import it through the same tool on their end. Your internet site shall look exactly the same, simply because all script apps store their content in a database. With phpMyAdmin you can also effortlessly search and replace content material of your choice across the entire website - a word, an expression or a link, for example.