title: Is it possible to use PDO instead of Doctrine in Symfony 4?
body: <p>I'm doing a simple MVC web app that is supposed to do different queries to a SQL database. I'm using <code>Symfony 4</code> as a framework, mostly to take advantage of its routing features.</p>
  <p>I know I could take advantage from Doctrine but I was wondering: if someone wants to use <code>PDO</code> instead of Doctrine is it possible to do so and how should it be implemented. Should I make a Database class with PDO that I could pass on to another class?</p>