Doctrine is an ORM or Object Relational Mapping. It is a software component that allows you to transform data from a database table into objects that can be used in your application, and vice versa. This article gives you a simple usage example of displaying data from a MySQL table.

PDO makes it possible to create PHP code that is more independent of a data server. In this article, we will see how to use PDO combined with Twitter Bootstrap to display data from MySQL.