Symfony 5: The Fast Track is the best book to learn
modern Symfony development, from zero to production. +300 pages in full color showing how to
combine Symfony with Docker, APIs, queues & async tasks, Webpack, Single-Page Applications, etc.
The ClassLoader component was removed in Symfony 4.0. As an alternative, use
any of the class loading optimizations provided by Composer.
This work, including the code samples, is licensed under a
Creative Commons BY-SA 3.0